Q. The value of $sin \frac{5 π}{12} sin \frac{π}{12}$ is

861 230 KCETKCET 2022Trigonometric Functions Report Error

A

0

15%

B

$\frac{1}{2}$

28%

C

1

31%

D

$\frac{1}{4}$

26%

Solution:

$sin \frac{5 π}{12} \cdot sin \frac{π}{12}$
$= \frac{1}{2} sin \frac{π}{6}$
$= \frac{1}{2} + \frac{1}{2} = \frac{1}{4}$