Question

42. Which of the following expressions is equal to
(sin 60°)(cos 30º) + (cos 60°)(sin 30°) ?
F. cos(60° -30°)
G. cos(60° +30°)
H. sin(60° -30°)
J. sin(60° +30°)
K. sin(60* 430")
+ °
2

Answer 1

Answer:

sin ( 60° + 30° )

Step-by-step explanation:

There is a formula : -

sn ( A + B ) = sin A cos B + cos A sin B

Here,

A = 60°

B = 30°

So,

( sin 60° ) ( cos 30° ) + ( cos 60° ) ( sin 30° ) = sin ( 60° + 30° )