CPM Homework Help : CCA2 Problem 7-162

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7-162.

Find the exact value for each of the following trig expressions. For parts (g) and (h), solve the equations and assume that 0 ≤ θ ≤ 2π.

Hint:

Refer to problem 7-123.

$\operatorname { cos } ( \frac { 3 \pi } { 4 } ) =$
Answer (a):
$-\frac{\sqrt{2}}{2}$

$\operatorname { tan } ( \frac { 4 \pi } { 3 } ) =$

$\operatorname { sin } ( \frac { 11 \pi } { 6 } ) =$
Answer (c):
$-\frac{1}{2}$

$\operatorname { sin } ( \frac { 3 \pi } { 4 } ) =$

$\operatorname { tan } ( \frac { 5 \pi } { 4 } ) =$
Answer (e):
$1$

$\operatorname { tan } ( \frac { 17 \pi } { 6 } ) =$

$\tan\left(θ\right) = 1$
Partial Answer (g):
$\frac{\pi}{4}$

$\tan\left(θ\right) = −1$

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