Question

If sin (A + B) = sin A cos B+ cos A sin B, then the value of sin 75° is: (A) √3+1 /2√2 (B) √3-1 /2√2 (C) √3+1/ 2 (D) √3+1/√2 9. If

Answer 1

Answer:

A

Step-by-step explanation:

sin 75 can written as sin(30+45)=sin30 cos45+cos 30sin45

=1/2*1/√2+√3/2*1/√2=(√3+1)/2√2