math

Spring 2020 Name: ______________________________

MATH 175 – Test 2 (Show Your Work )

7. Given

5

cos2

18

q

=-

and

180270

q

<<

oo

, find values of

sin

q

and

cos

q

.

8. Verify that each of the following is a trigonometric identity.

22

1sin

sec2sectantan

1sin

q

qqqq

q

-

=-+

+

9. Give the exact value of

4

cos2arctan

3

æö

ç÷

èø

without using a calculator.

10. Solve

2cos2cos2

qq

=

for all exact solutions in degrees.

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