ForHosting KIT · Developer Utilities

Superposition of two sinusoids calculator

When two pure tones, AC voltages, or forced oscillations share the same frequency, their sum is always another sinusoid at that frequency—only the amplitude and phase change.

● BetaFree · in your browser

Run — free How it works & API

Use it from WebAPIEmailTelegramApp soon

Students, audio engineers, and circuit designers need that combined amplitude and phase without expanding product-to-sum identities by hand for every pair of phasors. This superposition of two sinusoids calculator accepts the two amplitudes and phases, converts them to rectangular phasor components, adds those components, and returns the magnitude and atan2 phase of the resultant. The common angular frequency never has to be supplied: it factors out of the phasor picture and cancels from the amplitude and phase of the sum. The free browser widget and the prepaid API share one pure module, so homework checks and production scripts always agree on the same rounded numbers.

How to use it

Enter your values in the form above. The tool checks them before calculating and shows the result on the same page.

Check your inputs

Use the labels and units shown next to each field. If something is missing or outside the allowed range, the page points to the field to fix.

Use it again or automate it

Use the browser tool for individual checks and the API when you need the same capability in an automated workflow.

What you can do with it

Get an answer now

Enter one set of values and see the result without building a spreadsheet or script.

Compare scenarios

Change one value at a time and rerun the calculation to understand what affects the result.

Automate repeated work

Use the API when the same calculation needs to run inside your product or workflow.

FAQ

How do I use this capability?

Complete the fields above and run it on this page. The form highlights anything that needs attention.

For developers — API access

Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.

API endpoint

POSThttps://api.kit.forhosting.com/trig/superpose-same-frequency

Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.

Call it from your stack

curl -X POST https://api.kit.forhosting.com/trig/superpose-same-frequency \
  -H "Authorization: Bearer $KIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"amplitude_1":3,"phase_1":0,"amplitude_2":4,"phase_2":90}'

const res = await fetch("https://api.kit.forhosting.com/trig/superpose-same-frequency", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.KIT_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "amplitude_1": 3,
    "phase_1": 0,
    "amplitude_2": 4,
    "phase_2": 90
  })
});
const { task_id } = await res.json();

import os, requests

res = requests.post(
    "https://api.kit.forhosting.com/trig/superpose-same-frequency",
    headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
    json={
    "amplitude_1": 3,
    "phase_1": 0,
    "amplitude_2": 4,
    "phase_2": 90
},
)
task_id = res.json()["task_id"]

<?php
$res = file_get_contents("https://api.kit.forhosting.com/trig/superpose-same-frequency", false, stream_context_create([
  "http" => [
    "method"  => "POST",
    "header"  => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
    "content" => '{"amplitude_1":3,"phase_1":0,"amplitude_2":4,"phase_2":90}',
  ],
]));
$task = json_decode($res, true);

body := bytes.NewBufferString(`{"amplitude_1":3,"phase_1":0,"amplitude_2":4,"phase_2":90}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/trig/superpose-same-frequency", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)

Example request

{
  "amplitude_1": 3,
  "phase_1": 0,
  "amplitude_2": 4,
  "phase_2": 90
}

Example response

{
  "task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
  "type": "trig.superpose_same_frequency",
  "status": "queued",
  "_links": {
    "result": "/tasks/tsk_…/result"
  }
}

The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.

Pricing

Per request$0.002

Published price — no tokens, no invented credits. A failed task is never charged.

Errors

HTTP	Code	Meaning
`401`	`unauthorized`	Missing or invalid API key.
`402`	`insufficient_balance`	Your balance doesn't cover the task price.
`404`	`unknown_type`	That task type doesn't exist.
`429`	`rate_limited`	Too many requests. Use the webhook instead of polling.

Read the full KIT documentation →