1-Use the? (x,y) coordinates in the figure to find the value ofthe trigonometric function at the indicated real? number, t, orstate that the expression is undefined.

SIN 11?/6

2-Use the? (x,y) coordinates in the figure to find the value ofthe trigonometric function at the indicated real? number, t, orstate that the expression is undefined.

COS ?//6

3- Use the? (x,y) coordinates in the figure to find the value oftan 4?/3

or state that the expression is undefined.

4-Use the? (x,y) coordinates in the given figure to find thevalue of the trigonometric function at the indicated real? number,t, or state that the expression is undefined.

CSC 7?/6

5-Use the unit circle to find the value of COS 2?

and even or odd trigonometric functions to find the value ofCOS(-2?)

6- Use the unit circle to find the value of sin 7?/6

and even or odd trigonometric functions to find the value of sin(-7?/6)

7- Use the unit circle to find the value of tan 2?/3

and even or odd trigonometric functions to find the value of tan(-2?/3)

8-Use the unit circle to find the value of cos3?/2

and periodic properties of trigonometric functions to find thevalue of cos 11?/2

9- Let sin t =a?, cos t =b?, and tan t =c. Write the expressionin terms of? a, b, and c

6 sin( -t ) - sint t

10-  Let sin t =a?, cos t =b?, and tan t =c. Write theexpression in terms of? a, b, and c

sin(t+6?)?cos(t+4?)+tan(t+7?)=