math
Spring 2020 Name: ______________________________
MATH 175 – Test 2 (Show Your Work )
7. Given
image1.wmf
5
cos2
18
q
=-
andimage2.wmf
180270
q
<<
oo
, find values ofimage3.wmf
sin
q
andimage4.wmf
cos
q
.8. Verify that each of the following is a trigonometric identity.
image5.wmf
22
1sin
sec2sectantan
1sin
q
qqqq
q
-
=-+
+
9. Give the exact value of
image6.wmf
4
cos2arctan
3
æö
ç÷
èø
without using a calculator.10. Solve
image7.wmf
2cos2cos2
=
for all exact solutions in degrees.PAGE
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