Use even and odd properties of the trigonometric functions to find the exact value of the expression.
-$$\sin \left( - \frac { \pi } { 4 } \right)$$
A) $- \frac { \sqrt { 2 } } { 2 }$
B) $\frac { \sqrt { 2 } } { 2 }$
C) $\frac { \sqrt { 3 } } { 2 }$
D) $- \frac { \sqrt { 3 } } { 2 }$

Question

Quizplus · Accepted Answer

The sine function is odd, meaning $\sin(-x) = -\sin(x)$. Therefore, $\sin \left( - \frac { \pi } { 4 } \right) = -\sin \left( \frac { \pi } { 4 } \right) = - \frac { \sqrt { 2 } } { 2 }$.

Use Even and Odd Properties of the Trigonometric Functions to Find