PRECALC

MAT 123 Spring 2016

Name______________________ Recitation____________

Kahn Zhang Wertz ______________________________________________________________________

Problem 1 (6 points):

1) If 5

sin 13

A  , and 4

cos 9

B   , and both angles are in the second quadrant,

find:

a)  sin A B

b)  cos A B

c)  tan A B

MAT 123 Spring 2016

Name______________________ Recitation____________

Problem 2 (5 points):

1) If 7

cot 11

   , and 9

tan 7

  , with 2

    and

3

2

    ,

find:

(a)  sin  

(b)  cos  

(c)  tan  