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Law of Cosines Calculator

Free law of cosines calculator to solve triangle using law of cosines. Instant results in your browser — no signup.

Also known as: Solve triangle using law of cosines, law of cosines calculator, solve triangle using law of cosines calculator, solve triangle using law of cosines, triangle geometry, triangle solve triangle using law of cosines

Solver

Inputs

Results update when you click Solve.

Hypotenuse

141.4214

Math.sqrt((two_sides_angle_or_three_sid)*(two_sides_angle_or_three_sid) + (two_sides_angle_or_three_sid)*(two_sides_angle_or_three_sid))

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What this result means

Free law of cosines calculator to solve triangle using law of cosines. Instant results in your browser — no signup. Solve triangle using law of cosines: Math.sqrt((two_sides_angle_or_three_sid)*(two_sides_angle_or_three_sid) + (two_sides_angle_or_three_sid)*(two_sides_angle_or_three_sid)).

Assumptions

  • Rule dependency: Universal formula.

How it works

Solve triangle using law of cosines: Math.sqrt((two_sides_angle_or_three_sid)*(two_sides_angle_or_three_sid) + (two_sides_angle_or_three_sid)*(two_sides_angle_or_three_sid)).

Example

Example: “law of cosines calculator”. Enter your values and click the button to get a result.

Frequently asked questions

What does this triangle using law of cosines calculator do?+

It helps you solve triangle using law of cosines. Typical search: “law of cosines calculator”.

How should I read the result?+

Solve triangle using law of cosines using two sides + angle or three sides. Result: missing side/angle.