Question

if Sin(A-B)= sin A cos B - cos A Sin B and Cos (A -B)= cos A cos B + sin A sin B find the values of sin 15 degree and Cos 15 degree​

Answer 1

Answer:

Cos15=

$(\sqrt{3 } + 1) \div 2 \sqrt{2}$

Sin15=

$(\sqrt{3 } - 1) \div 2 \sqrt{2}$