Question

simplify: cos^2(x)tan(x)+sin(x)cos(x)

Answer 1

tan (x) = sin x/cos x

so cos^2x (tan x) = sin x cos x

Therefore, sin x cos x + sin x cos x = 2 sinx cos x

or you can write that as sin(2x)

becuase the double-angle formula for sin(2x) = 2 sin (x) cos (x).

Answer 2

Hi there!

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