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#2 Re: Help Me ! » Trig Identities *PLEASE HELP* » 2012-01-22 14:29:22

thanks so much bobbym,
think u can help me with 2 more?

#4 Help Me ! » Trig Identities *PLEASE HELP* » 2012-01-22 13:32:32

jimmytwofingers
Replies: 9

need help!!
these are a few questions i got wrong on homework... dont understand

Proof:

sec²x + csc²x = sec²x • csc²x

((1+cosx)/sinx) + ((sinx)/(1+cosx)) = 2cscx

(1+secx)/(tanx + sinx) = cscx

(tanx-tany)/(cotx-coty) = -tanx • tany

(cos(x-y))/(sinx • cosy) = cotx + tany

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