Right Triangle Trigonometry Precalculus

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

• sine

• cosine

• tangent

• cotangent

What is the ratio for cosine?

• H/A

• O/A

• A/H

• A/O

Which Trig function do you use?

• Sine

• Cosine

• Tangent

What is the value of x?

• 6 < x < 30

• 21.63

• 13.42

• 30 < x < 6

Find the ratio for sinA. (Reduce the fraction)

• 36/27

• 4/5

• 36/45

• 3/5

What is the correct ratio?

• sin 40 = w/28

• cos 40 = w/28

• tan 40 = w/28

• sin 40 = 28/w

Solve for x. Round to the nearest tenth.

• 103.5

• 4.7

• 55.0

• 23.4

Solve for x. Round to the nearest tenth.

• 9.8

• 0.1

• 0.038

• 9.9

What is the cosine of angle P?

• p/q

• q/r

• p/r

• r/q

What is the length of y?

• 8√2

• 4√2

• 4

• 8