PC T3 Unit 1 Part I Test Review

Front

What is the exact value of sin 150°?

Back

1/2

Front

What is the value of cosine at 315°?

Back

√2 / 2

Front

Find the area of the shaded sector of circle O with radius 6 inches and central angle 100°.

Back

31.4 sq. in.

Front

What is csc 330°?

Back

-2

Front

If you are given the two sides that are not the hypotenuse, which trig function should you use?

Back

tangent

Front

Define sine in terms of a right triangle.

Back

Sine is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

Define cosine in terms of a right triangle.

Back

Cosine is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

Define tangent in terms of a right triangle.

Back

Tangent is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the relationship between sine and cosine for complementary angles?

Back

sin(θ) = cos(90° - θ) and cos(θ) = sin(90° - θ).

Front

What is the formula for the area of a sector of a circle?

Back

Area = (θ/360) * π * r², where θ is the central angle in degrees and r is the radius.