Mathematics · Trigonometry

Orthogonal Sinusoid Amplitude Calculator

Calculate resultant sinusoid amplitude from cosine-component amplitude and sine-component amplitude.

Runs locally
Your numbers

Inputs and results stay in this browser. Change one value at a time to explore the relationship.

Your inputCalculatedPassed forward in chains
resultant sinusoid amplitude5

Calculation steps

  1. Use c=√(a²+b²) with cosine-component amplitude=3 and sine-component amplitude=4.
  2. resultant sinusoid amplitude=5.

Understand Orthogonal Sinusoid Amplitude

One idea, three depths

Choose how deeply to explain Orthogonal Sinusoid Amplitude

Orthogonal Sinusoid Amplitude: Calculate resultant sinusoid amplitude from cosine-component amplitude and sine-component amplitude.

Age 5Explain it to a 5-year-oldStart with a picture

Imagine using Orthogonal Sinusoid Amplitude to answer this question: calculate resultant sinusoid amplitude from cosine-component amplitude and sine-component amplitude? Enter cosine-component amplitude and sine-component amplitude; the calculator shows resultant sinusoid amplitude. For example: cosine-component amplitude=3 and sine-component amplitude=4 produce resultant sinusoid amplitude=5. The answer tells you resultant sinusoid amplitude.

Age 15Explain it to a 15-year-oldConnect it to the formula

Sine and cosine components of the same frequency combine as perpendicular phasor components. This page evaluates the relationship directly. The rule is c=√(a²+b²). Its input values are cosine-component amplitude, sine-component amplitude, and the main result is resultant sinusoid amplitude. For example: cosine-component amplitude=3 and sine-component amplitude=4 produce resultant sinusoid amplitude=5.

CollegeExplain it at college levelState the model precisely

This calculator evaluates the stated orthogonal sinusoid amplitude relation over the valid real-number domain stated below. The implemented relation is c=√(a²+b²), evaluated from cosine-component amplitude, sine-component amplitude to produce resultant sinusoid amplitude. Sine and cosine components of the same frequency combine as perpendicular phasor components. This page evaluates the relationship directly. This amplitude rule assumes matching frequency and a quarter-cycle component basis.

Inputs and valid domain

  • cosine-component amplitude must be a finite real number.
  • sine-component amplitude must be a finite real number.

Important boundary: This amplitude rule assumes matching frequency and a quarter-cycle component basis.

The formula

c=√(a²+b²)

How the calculator works through it

It substitutes cosine-component amplitude, sine-component amplitude into the formula and exposes every numerical step above. The main output is resultant sinusoid amplitude.

Read the result correctly

The resultant sinusoid amplitude is the direct answer to “calculate resultant sinusoid amplitude from cosine-component amplitude and sine-component amplitude.” Read it with the units shown beside the inputs; a sign, angle, percentage or rate changes what the number means.

A worked check

cosine-component amplitude=3 and sine-component amplitude=4 produce resultant sinusoid amplitude=5.

Where this model stops being reliable

This amplitude rule assumes matching frequency and a quarter-cycle component basis.

Learn it by changing one value

Begin with the worked example, then change one value while keeping the others fixed. Compare the new result and calculation steps to identify which part of the formula changed.

Dictionary terms behind this calculator

Before studying the codeWhat you should know firstUse the calculator immediately, or check the foundations before reading the implementation.

These foundations help you understand why Orthogonal Sinusoid Amplitude works. They never block the calculator, and “optional” means useful context rather than a hidden requirement.

Hard requirements

  • Reading formulas and substituting values

    Orthogonal Sinusoid Amplitude uses c=√(a²+b²). You need to recognise what each side represents before substituting the stated inputs or rearranging the relationship.

    Review this foundation about 4 min

Strong support

  • Angles in degrees and radians

    Interpreting the angle convention is essential for understanding the inputs and output of Orthogonal Sinusoid Amplitude.

    Review this foundation about 5 min

Optional enrichment

Learn the missing foundationsI already know these — show the code

Mathematics → algorithm → program

Implement this calculation in code

These are direct reference implementations of the calculator's principal relationship and first output. They run locally and include a small known-answer check where the language supports it.

Algorithm

  1. Read cosine-component amplitude, sine-component amplitude.
  2. Evaluate the principal relationship: c=√(a²+b²).
  3. Return resultant sinusoid amplitude and check the domain conditions described above.
Python
            from math import *

def orthogonal_sinusoid_amplitude_calculator(a, b) -> float:
    return sqrt(((a * a) + (b * b)))

assert abs(orthogonal_sinusoid_amplitude_calculator(3, 4) - 5) < 1e-6 * max(1.0, abs(5))
          
Current calculator valuesUpdates when you change an input above.
              
            
C
            #include <assert.h>
#include <math.h>

double orthogonal_sinusoid_amplitude_calculator(double a, double b) {
    return sqrt(((a * a) + (b * b)));
}

int main(void) {
    const double expected = 5;
    const double actual = orthogonal_sinusoid_amplitude_calculator(3, 4);
    assert(fabs(actual - expected) < 1e-6 * fmax(1.0, fabs(expected)));
}
          
Current calculator valuesUpdates when you change an input above.
              
            
C++
            #include <cassert>
#include <cmath>
#include <numbers>

double orthogonal_sinusoid_amplitude_calculator(double a, double b) {
    return std::sqrt(((a * a) + (b * b)));
}

int main() {
    constexpr double expected = 5;
    const double actual = orthogonal_sinusoid_amplitude_calculator(3, 4);
    assert(std::fabs(actual - expected) < 1e-6 * std::fmax(1.0, std::fabs(expected)));
}
          
Current calculator valuesUpdates when you change an input above.
              
            
Linux x86-64 assembly

x86-64 NASM · System V ABI · Linux · SSE2 with libm where required

            ; double orthogonal_sinusoid_amplitude_calculator(double a, double b)
; Linux x86-64 NASM · System V ABI · first eight doubles in xmm0–xmm7
global orthogonal_sinusoid_amplitude_calculator
section .text

orthogonal_sinusoid_amplitude_calculator:
    push rbp
    mov rbp, rsp
    sub rsp, 48
    movsd [rbp-8], xmm0
    movsd [rbp-16], xmm1
    movsd xmm0, [rbp-8]
    mulsd xmm0, [rbp-8]
    movsd [rbp-40], xmm0
    movsd xmm0, [rbp-16]
    mulsd xmm0, [rbp-16]
    movsd [rbp-48], xmm0
    movsd xmm0, [rbp-40]
    addsd xmm0, [rbp-48]
    movsd [rbp-32], xmm0
    sqrtsd xmm0, [rbp-32]
    movsd [rbp-24], xmm0
    movsd xmm0, [rbp-24]
    leave
    ret
          
Current calculator valuesUpdates when you change an input above.
              
            
MATLAB
            function result = orthogonal_sinusoid_amplitude_calculator(a, b)
    result = sqrt(((a * a) + (b * b)));
end
          
Current calculator valuesUpdates when you change an input above.
              
            
Wolfram Language
            ClearAll[mwCalculate];
mwCalculate[a_, b_] := Sqrt[((a * a) + (b * b))];
          
Current calculator valuesUpdates when you change an input above.
              
            

Continue in mathematical software

The downloaded file includes your current inputs and first calculated result. It is created locally.

Floating-point answers can differ slightly by language, compiler and processor. Compare within a suitable tolerance rather than assuming every decimal representation will be identical.

Supporting sourcesAcademic referencesPrimary standards, textbooks and complete citations

Standards, reading and academic references

Use the calculator as the worked interaction, then consult the primary standards and academic textbooks listed below. MW SysArc links to the original sources; the explanation on this page is original and does not reproduce them.

Algebra and Trigonometry 2e

Read the related free OpenStax mathematics chapters
Cite this book
APA 7
Abramson, J. (2021). Algebra and trigonometry 2e. OpenStax. https://openstax.org/books/algebra-and-trigonometry-2e/pages/1-introduction-to-prerequisites
MLA 9
Abramson, Jay. Algebra and Trigonometry 2e. OpenStax, 2021, https://openstax.org/books/algebra-and-trigonometry-2e/pages/1-introduction-to-prerequisites.
Chicago author-date
Abramson, Jay. 2021. Algebra and Trigonometry 2e. Houston, TX: OpenStax. https://openstax.org/books/algebra-and-trigonometry-2e/pages/1-introduction-to-prerequisites.

OpenStax entries are free to read online. Follow the licence shown on each linked source before redistributing or adapting its content.

Reuse the page responsiblyCite this pageAPA, MLA, Chicago, Harvard, BibTeX and RIS

These formats cite this calculator page itself. They are separate from the academic references above, which support the mathematical method and terminology.

APA 7

MW SysArc. (2026, July 21). Orthogonal Sinusoid Amplitude Calculator. MW SysArc Tools. https://math.mwsysarc.com/trigonometry/orthogonal-sinusoid-amplitude-calculator

MLA 9

MW SysArc. “Orthogonal Sinusoid Amplitude Calculator.” MW SysArc Tools, 21 July 2026, https://math.mwsysarc.com/trigonometry/orthogonal-sinusoid-amplitude-calculator. Accessed 31 Aug. 2026.

Chicago 17

MW SysArc. “Orthogonal Sinusoid Amplitude Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 31, 2026. https://math.mwsysarc.com/trigonometry/orthogonal-sinusoid-amplitude-calculator.

Harvard

MW SysArc (2026) ‘Orthogonal Sinusoid Amplitude Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://math.mwsysarc.com/trigonometry/orthogonal-sinusoid-amplitude-calculator (Accessed: 31 August 2026).

BibTeX and RIS records

BibTeX

@misc{mwsysarc_orthogonal_sinusoid_amplitude_calculator_2026,
  author = {{MW SysArc}},
  title = {Orthogonal Sinusoid Amplitude Calculator},
  howpublished = {MW SysArc Tools},
  year = {2026},
  url = {https://math.mwsysarc.com/trigonometry/orthogonal-sinusoid-amplitude-calculator},
  note = {Published July 21, 2026; accessed August 31, 2026}
}

RIS

TY  - ELEC
AU  - MW SysArc
TI  - Orthogonal Sinusoid Amplitude Calculator
T2  - MW SysArc Tools
PY  - 2026
DA  - 2026-07-21
Y2  - 2026-08-31
UR  - https://math.mwsysarc.com/trigonometry/orthogonal-sinusoid-amplitude-calculator
N1  - Published July 21, 2026
ER  -

Clear answers

Frequently asked questions

What does the Orthogonal Sinusoid Amplitude do?

Calculate resultant sinusoid amplitude from cosine-component amplitude and sine-component amplitude.

How does the Orthogonal Sinusoid Amplitude work?

The calculator applies c=√(a²+b²). Sine and cosine components of the same frequency combine as perpendicular phasor components. This page evaluates the relationship directly.

What can I learn from the Orthogonal Sinusoid Amplitude?

It connects the mathematical rule to your chosen numbers and shows each calculation step. Change one input at a time to see how the result responds.

Does MW SysArc receive or store what I enter?

No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.

How should I use the result?

Use the steps to understand the method, then verify important school or professional work using the notation and rounding rules required in your setting.

Last reviewed . Calculations tested .

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