Free

Right Triangle Trigonometry Worksheet

Geometry Math · printable worksheet (PDF) with answer key · 14 problems · CCSS HSG.SRT.C.8

A printable geometry right triangle trigonometry practice worksheet with 14 problems and a complete, step-by-step answer key — formatted to print cleanly on standard paper. Download the problem set and answer key below for free.

Sample problems

Use the ratios SOH-CAH-TOA: $sin θ = \frac{opp}{hyp}$ , $cos θ = \frac{adj}{hyp}$ , $tan θ = \frac{opp}{adj}$ . Always write the trig equation first, then solve. Round side lengths and angle measures to the nearest tenth.

1. Write the equation and find $x$ .
2. Write the equation and find $x$ .
3. A right triangle has an angle of $2 8^{\circ}$ and a hypotenuse of $20$ . Find the length $x$ of the side opposite the $2 8^{\circ}$ angle.
4. Write the equation and find $x$ .

Plus 10 more problems and a full answer key in the PDF.

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Problem set (PDF)Answer key (PDF)

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