CPM Homework Help : INT3 Problem 11-46

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11-46.

Without using a calculator, write two solutions to each of the following equations for $0^\circ\leθ<360^\circ$ .

${ \sin } ( \theta ) = \frac { 1 } { 2 }$
Partial Answer (a):
One answer is $θ = 30^\circ$

${ \tan } ( \theta ) = \sqrt { 3 }$
Hint (b):
Tangent is positive in quadrants I and III.

${ \cos } ( \theta ) = \frac { \sqrt { 3 } } { 2 }$
Answer (c):
$θ = 30^\circ, 330^\circ$

$\operatorname { sin } ( \theta ) = - \frac { \sqrt { 2 } } { 2 }$
Hint (d):
Sine is negative in quadrants III and IV.

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