11.4 Find Missing Side using Sine and Cosine Ratio

Front

What is the sine ratio in a right triangle?

Back

The sine ratio is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine ratio in a right triangle?

Back

The cosine ratio is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the tangent ratio in a right triangle?

Back

The tangent ratio is the ratio of the length of the opposite side to the length of the adjacent side.

Front

How do you find a missing side using the sine ratio?

Back

Use the formula: sin(angle) = opposite/hypotenuse, rearranging to find the opposite side.

Front

How do you find a missing side using the cosine ratio?

Back

Use the formula: cos(angle) = adjacent/hypotenuse, rearranging to find the adjacent side.

Front

What is the formula to find the opposite side using sine?

Back

opposite = hypotenuse * sin(angle)