Rewrite with only sin x and cos x.
sin 2x - cos 2x
a. 2 sinx cosx - 1 + 2 sin^2x
b. 2 sin x cos^2x - 1 + 2 sin^2x
c. 2 sin x cos^2x - sin x + 1 - 2 sin^2x
d. 2 sin x cos^2x - 1 - 2 sin^2x

  A. 2·sin(x)·cos(x) - 1 + 2·sin^2(x)

Step-by-step explanation:

The double angle identities can be use directly:

The difference of these is ...

  sin(2x) -cos(2x) = 2sin(x)cos(x) -(1 -2sin^2(x)) = 2sin(x)cos(x) -1 +2sin^2(x)

45

step-by-step explanation:

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