Law of Sines
Calculate Law of Sines instantly with the exact formula and a worked example.
Law of Sines
Side a
Angle A°
Angle B°
Side b
8.6603
More about: Law of Sines
What it calculates
The “Law of Sines” calculator computes Side b from 3 parameters: side a, angle a (°), angle b (°).
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters Side a = 5, Angle A = 30 °, Angle B = 60 ° the result is 8.66.
How to use
- Enter side a, angle a and angle b — each field above is adjustable with a slider.
- Side b is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Law of Sines calculated?
The Law of Sines calculator computes Side b from side a, angle a, angle b. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Law of Sines calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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