Right Triangle and Unit Circle

Which trigonometric ratio should you use?

• Tangent Ratio

• Sine Ratio

• Cosine Ratio

• Any ratio

What is the correct ratio?

• 7/24

• 24/7

• 7/25

• 24/25

Set up the problem so that you can solve for X.

• sin X = 41/28

• tan X = 41/28

• cos X = 28/41

• sin X = 28/41

Solve for x. Round to the nearest tenth.

• 15.3

• 16.6

• 24.1

• 24.3

Solve for x.

• 24.20

• 4.92

• 290.4

• 29.75

• cosθ

• OP

• 1

• sinθ

Solve
cos²θ = ½ 
on θ∈[0, 2π)

• θ = π /4, 7π /4

• θ = π /4, 3π /4

• θ = 3π /4, 5π /4

• θ = π /4, 3π /4, 5π /4, 7π /4

• 0

• 1

• -1

• 3/5

• -5/4

• -3/5

• -4/5