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Trigonometric Identities 
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#1
Feb105, 07:15 PM

P: 1

I can, for the mort part, understand how to derive and "proof" most of my Identity work, but some of the more complex (in my feeble opinion) problems give me quite a bit of trouble.
Can anyone explain these? "Use the fundamental identities to simplify to sines and cosines: tan(^2)x  (csc(^2)x/cot(^2)x) " Someone told me the answer was (1) and I had no idea how to get that. and "Confirm the Identity: (sinx)/(1cosx) + (sinx)/(1+cosx) = 2cscx" Any explanations would be greatly appreciated! Thanks! 


#2
Feb105, 07:23 PM

Sci Advisor
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P: 11,895

HINT:Use the definitions of "composite" functions (tan,cotan,sec,csc) and the fundamental identity
[tex]\sin^{2}x+\cos^{2}x=1 [/tex] Daniel. 


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