Question

FIND THE VALUE OF 2 sin 15 cos 15

Answer 1

As we all know that

2sinxcosx = sin2x

then 2 sin15cos15 = sin (2*15) = sin 30

Then we all know that the value of sin 30 is 1/2

Therefore the value of 2 sin 15 cos 15 = 1/2

Answer 2

1/2 or 0.5

Apply the sine double-angle identity.

The result can be shown in multiple forms.

Exact Form:

1

2

Decimal Form:

0.5