Solving for Angles Given Trig Functions

If cosΘ = -1/2, what does theta equal? There are two answers, put the smaller answer first (a)   and ​ (b)  

• 240

• 330

• 45

• 60

• 360

• 120

• 135

• 345

• 210

• 225

Answer explanation

cosine correlates with x values and there are only two points on the unit circle with an x value of -1/2 and they are 240 and 120

What trig function best solves for angle y?

• Inverse Sine

• Sine

• Inverse Cosine

• Tangent

• 57.99
• 51.32
• 38.68
• 32.00

Solve for x. 

• 44.0

• 41.4

• 1.12

• 0.723

• Cos(47)

• COS(133)

• Sin(33)

• COS(43)

Find the value of each angle to the nearest tenth of a degree.
Tan(R) = 0.2623

• 18

• 55.0

• 14.7

• Don't pick green

Find m∠N

• 14

• 65

• 76

• 53

• COS(60)

• COS(30)

• SIN(60)

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

• 4π/3

• 7π/6

• 3π/4

• 5π/4