Question

if A=15 then the value of 4 sin 2 A cos 4 A sin 6A

Answer 1

since

A=15,

then

4sin2A cos4A sin6A,

4 × sin(2×15) × cos(4×15) × sin(6×15),

4 × sin30 × cos60 × sin90,

4 × 1/2 × 1/2 × 1,

1

Answer 2

Since A is 15 then,equation is

=4sin30cos45sin90

=4(1/2)(1/2^1/2)(1)

=1/(2^3/2)