52.2k views
2 votes
Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula.
2*sin(x/2)*cos(x/2)

User Hanabi
by
8.8k points

1 Answer

1 vote

Answer:


2\sin{(x)/(2)}\cos{(x)/(2)} = sin(x)

Explanation:

The double angle formula states that:


sin(2a) = 2sin(a)cos(a)

In this question:


2\sin{(x)/(2)}\cos{(x)/(2)}

So


a = (x)/(2)

Then


2\sin{(x)/(2)}\cos{(x)/(2)} = \sin{(2x)/(2)} = sin(x)

User Joshua Pack
by
8.3k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories