Trig Retake

Front

What is the reference angle?

Back

The reference angle is the acute angle formed by the terminal side of an angle in standard position and the x-axis.

Front

What is the standard position of an angle?

Back

An angle is in standard position when its vertex is at the origin and its initial side lies along the positive x-axis.

Front

How do you find the reference angle for an angle greater than 180°?

Back

Subtract 360° from the angle if it is greater than 360°, or subtract from 180° if it is between 180° and 360°.

Front

What is the reference angle for 125°?

Back

The reference angle for 125° is 55°.

Front

Convert 270 degrees to radians.

Back

Front

What is the cosine of an angle in a right triangle?

Back

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

Front

Find the value of cos(θ) if the adjacent side is 12 and the hypotenuse is 13.

Back

Front

What is the sine of an angle in a right triangle?

Back

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

Front

What is the tangent of an angle in a right triangle?

Back

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

Front

How do you convert degrees to radians?

Back