Trig 5

The solution set of the equation $\sin x=-\frac{1}{2}$   

for  $<0,2\pi>$  is:

• 
  $\left\{\frac{7\pi}{6},\frac{11\pi}{6}\right\}$
  

• $\left\{\frac{7\pi}{6}\right\}$

• $\left\{\frac{11\pi}{6}\right\}$

• $\left\{\frac{5\pi}{6},\frac{7\pi}{6}\right\}$

Solve for 0≤x≤2π

2cos²x + cosx = 0

• π/2, 3π/2

• 0, π,2π

• 2π/3, 4π/3

• π/3, 5π/3

Solve for 0≤x≤2π

4cos²x - 2 = 0

• π/3, 5π/3

• π/4, 7π/4

• 3π/4, 5π/4

• π/6, 11π/6

Solve for 0≤x≤2π

2sin²x - 5sinx + 2 = 0

• π/6, 5π/6

• 7π/6, 11π/6

• π/3, 2π/3

• 4π/3, 5π/3

Identify the Law of Sines

• Soh Cah Toa

Solve for x.

• 24.20
• 4.92
• 290.4
• 29.75

For triangle ABC, the Law of Sines is  $\frac{a}{\sin\ A}=\frac{\ ?\ }{?}=\frac{c}{\sin\ C}$  

•  $\frac{b}{Sin\ B}$  

•  $\frac{b}{Sin\ A}$  

•  $\frac{Sin\ B}{Sin\ B}$  

•  $\frac{Sin\ B}{b}$  

What is the measure of angle A?

• 50 degrees
• 60 degrees
• 78 degrees
• 74 degrees

Find m<B

• A
• B
• C
• D

Find AC

• 12
• 10
• 23
• 14