# Trigonometry-6.1 Verifying Trigonometric Identities

August 30, 2017

Question
6.1 Verifying Trigonometric Identities
Exercise 6.1, Problems 3, 7, 11, 16, 21, 26, 31, 36, 41:
For the following, verify each identity:
3.

7.

11.

16.

21.

26.

31.

36.

41.

6.2 Sum and Difference Formulas
Exercise 6.2, Problems 2, 3, 9, 15, 24, 30, 33, 36, 39 (pp. 660-661). The last three are VERY
IMPORTANT identities.

Find the exact value for each expression:

2.

3. )

Verify the identity:
9.

Find the exact value of each expression:
15.

24.

Write the expression as the sine, cosine, or tangent of an angle; then find the exact value of the
expression:
30.

Verify each identity:
33.

36.

39.

Add in three problems from 57 – 63 of your choosing (p. 661), but find only “Part a” for one of them,
“Part b” for the second of them, and “Part c” for the third of them. QUADRANT INFO IS VERY
IMPORTANT HERE.
Parts: a.

b.

c.

57.
Part a:

59.
Part b:

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