Trig Retake

Front

What is the conversion of 225 degrees to radians?

Back

225 degrees = \frac{5\pi}{4} radians.

Front

What is the value of sin 45°?

Back

sin 45° = \frac{\sqrt{2}}{2}.

Front

What is the exact value of sin 30°?

Back

sin 30° = \frac{1}{2}.

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

What is a reference angle?

Back

A reference angle is the acute angle formed by the terminal side of an angle and the x-axis.

Front

How do you find the reference angle for 150°?

Back

Reference angle for 150° = 180° - 150° = 30°.

Front

What is the value of cos 60°?

Back

cos 60° = \frac{1}{2}.

Front

What is the value of tan 45°?

Back

tan 45° = 1.

Front

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

Back

Sine of an angle = Opposite side / Hypotenuse.

Front

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

Back

Cosine of an angle = Adjacent side / Hypotenuse.