Friday
August 1, 2014

Homework Help: Trigonometry

Posted by Jessy on Sunday, November 24, 2013 at 4:10pm.

Prove the following trigonometric identities. please give a detailed answer because I don't understand this at all.

a. sin(x)tan(x)=cos(x)/cot^2 (x)
b. (1+tanx)^2=sec^2 (x)+2tan(x)
c. 1/sin(x) + 1/cos(x) = (cosx+sinx)(secx)(cscx)
d. tan^2 (x)(1+1/tan^2 x) = 1/(1-sin^2x)
e. sin^3 (x) +cos^3 (x)/(sinx+cosx) = 1-sinxcosx
f. (sinx-cosx+1)/(sinx+cosx-1)= (sinx+1)/cosx

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