Expand sin(2x)

$\sin (2 x)$

Apply the sine double-angle identity.

$2 \sin (x) \cos (x)$

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Determine if Linear y=-2cos(x)

Solve for x log base 20 of -2x+7 = log base 20 of 2x-1

Graph m(x)=(19/4)^(-x)

Find the Reference Angle (11pi)/7

Graph y=sin(x-(pi/4))