Q. The expression $\frac{s i n 2 2 ^{\circ} c o s 8 ^{\circ} + c o s 15 8 ^{\circ} c o s 9 8 ^{\circ}}{s i n 2 3 ^{\circ} c o s 7 ^{\circ} + c o s 15 7 ^{\circ} c o s 9 7 ^{\circ}}$ when simplified reduces to -

192 162 Trigonometric Functions Report Error

A

1

B

$- 1$

C

2

D

none

Solution:

Correct answer is (a) 1