SOLUTION: sin(x/2)cos(x/2)(1-2sin^2(x/2))

Question 1144157: sin(x/2)cos(x/2)(1-2sin^2(x/2))
Answer by ikleyn(52861) (Show Source): You can put this solution on YOUR website!
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First,   sin(x/2)cos(x/2) = .


Second,  1-2sin^2(x/2)  = cos(x).


Therefore,  sin(x/2)cos(x/2)(1-2sin^2(x/2)) =  = .    ANSWER

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You need to know basic Trigonometry formulas for multiple arguments (for double arguments, in this case).

See the lesson
- FORMULAS FOR TRIGONOMETRIC FUNCTIONS
in this site.

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