Review Trig

Convert 90° to radians.

• π/2
• π
• 2π
• 3π/2

Convert (3π/4) radians to degrees.

• 135°
• 120°
• 150°
• 180°

In which quadrant is the angle 250° located?

• Quadrant I
• Quadrant II
• Quadrant III
• Quadrant IV

In which quadrant is (7π/6) radians located?

• Quadrant I
• Quadrant II
• Quadrant III
• Quadrant IV

sin(30°) equals:

• √3/2
• 0.5
• 1
• 0

cos(0°) is:

• 1
• 0
• -1
• Undefined

What is tan⁻¹(1) in degrees?

• 0°
• 30°
• 45°
• 60°

cos⁻¹(0) is:

• 0°
• 60°
• 90°
• Undefined

Which of these is a fundamental trigonometric identity?

• sin²x + cos²x = 1
• tan x = sin x + cos x
• cos x = tan x
• sin²x = 1

If sin x = 3/5 and x is in Quadrant II, find cos x.

• -0.8
• 45752
• -0.6
• 45721