➗ Law of Sines Side Calculator
Find a side using one known side and two angles.
Result
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How this calculator works
Find a side using one known side and two angles.
Formula
b=a sin(B)/sin(A)
Example
a=10, A=30°, B=45° gives b≈14.14.
Frequently asked questions
What does the Law of Sines Side Calculator do?
Find a side using one known side and two angles.
Are the results exact?
The calculator follows the displayed formula. Rounded display values may differ slightly from full-precision results.
Can I use negative or decimal values?
Most fields accept decimals and negative values when they make sense for the formula.
How should I check an important result?
Review the formula, verify your entries, and confirm high-stakes work with a qualified teacher or professional.