Trig & the Unit Circle

Find the exact value of: sin (π/2)

• √3/2

• √2/2

• 1/2

• 1

Find the exact value of: cos(π)

• √3/2

• -√2/2

• -1

• 1

Find the exact value of: tan(3π/4)

• √2/2

• -√2/2

• √3/2

• -1

Find the exact value of: sec(90^o)

• UND

• 1

• -1

• 0

Find the exact value of: cot 3π/4

• -√2/2

• -1

• 1

• √2/2

Find the exact value of:  $\csc\left(-120\degree\right)$  

•  $\frac{\sqrt{3}}{2}$  

•  $-\frac{\sqrt{3}}{2}$  

•  $\frac{2\sqrt{3}}{3}$  

•  $-\frac{2\sqrt{3}}{3}$  

Find the exact value of: cos(5π/3)

• -√2/2

• -1/2

• 1/2

• √3/2

Find the exact value of: tan(7π/6)

• 1/2

• √3

• -1/2

• √3/3

Find the exact value of: sin(-240°)

• (√3)/2)

• (-1/2)

• (√2/2)

• (1/2)

 $\tan45\degree\cos30\degree$  

Find the exact value of the expression.

•  $\frac{\sqrt{3}}{2}$  

•  $\frac{1}{2}$  

•  $\frac{\sqrt{2}}{2}$  

•  $\frac{\sqrt{6}}{4}$