Question

Value of sin(45°+q) cos(15°+q) – cos(45°+q) sin(15°+q) is :- (1) 1 (2) 3/2 (3) 1/2 (4)-1/2

Answer 1

Answer:

since sin(A - B) = sin A cos B - cos A sin B

given sin(45°+q) cos(15°+q) – cos(45°+q) sin(15°+q)

=sin(45+q-(15+q))

=sin(30)

=1/2

3 option

plz mark

Step-by-step explanation:

Answer 2

Answer:

sin(45°+q) cos(15°+q) – cos(45°+q) sin(15°+q) is :- (1) 1 (