Question

. write the value of 2sin 75° sin 15°​

Answer 1

Answer:

1/2

Step-by-step explanation:

2 Sin 75 degree × sin 15 degree = 1 by 2

Answer 2

Answer:

it is simple yaar ✅

Step-by-step explanation:

$2 sin75 \: \: sin15 \\ \: \: \: \: \: \: \: \: \: = 2sin(90 - 15)sin15 \\ = 2cos15 \: sin15 \\ (using \: formula \:( sin90 - x)) \\ = > \cos(x) \: and \: sin(2x) = 2 \sin(x) + \cos(x) \\ = > \sin(2 \times 15) \\ = > sin30 \\ = > \frac{1}{2}$

because sin30 has the value of 1/2.