Posted by
**Amanda** on
.

simplfy the expression by double angle formula or a half angle formula.

cos^2(x/2)-sin^2(x/2)

2sin(x/2)cos(x/2)

Thursday

March 30, 2017
Posted by
**Amanda** on
.

simplfy the expression by double angle formula or a half angle formula.

cos^2(x/2)-sin^2(x/2)

2sin(x/2)cos(x/2)

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