CPM Homework Help : A2C Problem 8-162

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8-162.

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

Hint:

Refer to problem 8-121.

$\operatorname { cos } ( \frac { 3 \pi } { 4 } ) =$
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):
$1$

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

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

$\operatorname{tan}\left(θ\right) = −1$

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