First slide

Trignometry

Question

Find the value of $sin300°$ .

Easy

A

$\frac{1}{2}$
B

$\frac{1}{\sqrt{3}}$
C

$- \frac{\sqrt{3}}{2}$
D

$- \frac{1}{2}$

Solution

$\sin 300 ° = \sin (270 ° + 30 °) = - \cos 30 ° = - \frac{\sqrt{3}}{2}$

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