Question

Evaluate sin60°.cos30°+sin30°.cos60°.What is the value of sin(60+30). What can you conclude.​

Answer 1

Answer:

sin 60 cos 30+ sin 30 cos 60= 3/4 +1/4 = 4/4 =1......(1) now, it is given that= sin(60+30) so, sin 90=1 .....(2) we get (1)=(2) hence we conclude that sin(60+30)= sin 60 cos30+ sin 30 cos 60.