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how can i prove

tan X/sinx+cosx=sin^2 X + sinXcosX/cos X - 2cos^3X

so far i've tried using basic identities to figure it out, but i just end up getting confused.

tan X/sinx+cosx=sin^2 X + sinXcosX/cos X - 2cos^3X

so far i've tried using basic identities to figure it out, but i just end up getting confused.

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