Isa S.

asked • 03/07/18

I need to prove that the equation (sin^3 + cos^3)/(1-2cos^2) = (sec - sin)/(tan-1) is true using fundamental trig function properties...any help?

I am using trigonometric identities like the fundamental identities and pythagorean-rules to substitute/cancel terms until I end up with the same thing on the left of the equation as I have on the right.

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