|Feb1-05, 07:15 PM||#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.
"Confirm the Identity:
(sinx)/(1-cosx) + (sinx)/(1+cosx) = 2cscx"
Any explanations would be greatly appreciated! Thanks!
|Feb1-05, 07:23 PM||#2|
Blog Entries: 9
HINT:Use the definitions of "composite" functions (tan,cotan,sec,csc) and the fundamental identity
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