Trig Ratios and Side Lengths

Front

What is the definition of the opposite side in a right triangle?

Back

The side opposite the angle of interest.

Front

What is the definition of the adjacent side in a right triangle?

Back

The side next to the angle of interest, excluding the hypotenuse.

Front

What is the definition of the hypotenuse in a right triangle?

Back

The longest side of a right triangle, opposite the right angle.

Front

What is the tangent ratio?

Back

Tangent = Opposite / Adjacent.

Front

What is the sine ratio?

Back

Sine = Opposite / Hypotenuse.

Front

What is the cosine ratio?

Back

Cosine = Adjacent / Hypotenuse.

Front

How do you find the length of a side using the tangent function?

Back

Use the formula: tan(angle) = Opposite / Adjacent.

Front

If you know the opposite side and the angle, how can you find the hypotenuse?

Back

Use the sine function: sin(angle) = Opposite / Hypotenuse.

Front

If you know the adjacent side and the angle, how can you find the hypotenuse?

Back

Use the cosine function: cos(angle) = Adjacent / Hypotenuse.

Front

What is the relationship between the sides in a 30-60-90 triangle?

Back

The sides are in the ratio 1 : √3 : 2.