Posted by
**alaina** on
.

verify the identity.

cos2 x - sin2 x = 1 - 2sin2 x

the 2's next to the sin and cos on the right sides are powers.

Thursday

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

verify the identity.

cos2 x - sin2 x = 1 - 2sin2 x

the 2's next to the sin and cos on the right sides are powers.

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