All Free Toolkit

Right Triangle Calculator

Solve right triangles using trigonometric ratios (sin, cos, tan), acute angles, area, and perimeter

Right Triangle Calculator

Solve right triangles using trigonometric ratios (sin, cos, tan), side lengths, acute angles, area, and perimeter.

Leg a (Base)

Leg b (Height)

Sides & Angles

Hypotenuse (c):5.0000

Angle A (atan b/a):53.13°

Angle B (90° - A):36.87°

Area:6.0000

Perimeter:12.0000

Trigonometric Ratios

sin(A) = opp/hyp:0.8000

cos(A) = adj/hyp:0.6000

tan(A) = opp/adj:1.3333

About Right Triangle Calculator

Solve right triangles using trig ratios (sin, cos, tan), leg lengths, hypotenuse, acute angles, area, and perimeter.

How to Use Right Triangle Calculator

1Enter leg a (base) and leg b (height).
2View hypotenuse, acute angles A and B, area, perimeter, and sin/cos/tan ratios.
3Copy right triangle solution.

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