Trigonometric Ratios

Trigonometric ratios (SOH-CAH-TOA) relate the angles and sides of right triangles. They are fundamental in geometry, physics, engineering, and navigation

The calculator uses the standard published formula for trig ratios. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: sin(θ) = Opposite / Hypotenuse. Each step in the calculation is shown so you can verify the result manually.