Question

If A=15 , verify that 4sin 2A. Cos 4A sin 6A =1

Answer 1

A = 15 , then 2A= 30 .....4A=60......6A=90
4sin2A.cos4A.sin6A
=4(sin30).(cos60).(sin90)
=4(1/2).(1/2).(0)
=0