# Solve the following function $\int\limits_{ – \pi }^\pi {\sin (t)\sin (3t)dt = }$

Solve the following function $\int\limits_{ - \pi }^\pi {\sin (t)\sin (3t)dt = }$

### Right Answer is: 0

#### SOLUTION

$\int\limits_{ – \pi }^\pi {\sin (t)\sin (3t)dt = }$

sin(t).sin(3t) Is even function therefore the limits becomes

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