Math & Statistics
Law of Sines Calculator
Find a missing side or angle in a triangle using the law of sines.
Your inputs
Change any value to update the result instantly.
Side b
13.473
Angle C
80 °
Side c
15.3209
Formula and working
a ÷ sin(A) = b ÷ sin(B)
- 1
Collect the inputs
Side a = 10; Angle A = 40 °; Angle B = 60 °
- 2
Apply the formula
a ÷ sin(A) = b ÷ sin(B)
- 3
Result
Side b = 13.473
Frequently asked questions
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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