Study of triangles and trigonometric functions including sine, cosine, and tangent.
If you find a side using sine, cosine, or tangent, use the inverse function (like \( \sin^{-1} \)) to check your answer by working backwards. This way, you'll catch mistakes and feel more confident!
If you know \( \sin(\theta) = 0.5 \), use \( \sin^{-1}(0.5) = 30^{\circ} \) to check.
Use your calculator’s inverse function to verify the angle after solving for a side.