8.7 CYU Day 1

Front

What are the coordinates of 180° on the unit circle?

Back

(–1, 0)

Front

In the coordinate plane, if the terminal side of angle θ in standard position passes through the point (x, y), then cos θ = ?

Back

x/r

Front

Convert 150° to radians.

Back

5π/6

Front

Evaluate Sin 60°.

Back

Front

Evaluate Sin 45°.

Back

Front

What is the definition of a unit circle?

Back

A circle with a radius of 1 centered at the origin of the coordinate plane.

Front

What is the relationship between degrees and radians?

Back

180° = π radians.

Front

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

Back

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

Front

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

Back

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

Front

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

Back

The ratio of the sine to the cosine of the angle.