Posted by Rebekah on Monday, February 4, 2013 at 6:52pm.
1. Prove
sin  cos +1/ sin + cos  1 = sin +1/cos
2. 1+ sin/ 1 sin = (sec + tan)^2
Thanks!!

Precalc  Reiny, Monday, February 4, 2013 at 7:03pm
Your lack of brackets make your equations totally ambiguous.
Secondly your trig ratios have no argument, sin and cos by themselves are meaningless
that's like saying
5 + √
I happen to know the second one , so
(1+ sinØ)/(1  sinØ) = (secØ + tanØ)^2
LS = (1+ sinØ)/(1  sinØ) * (1+sinØ)/(1+sinØ)
= (1 + sinØ)^2 /(1  sin^2Ø)
= (1 + 2sinØ + sin^2 Ø)/ cos^2 Ø
= 1/cos^2 Ø + 2sinØ/cos^2 Ø + sin^2 Ø/cos^2 Ø
= sec^2 Ø + 2tanØsecØ + tan^2 Ø
= (secØ + tanØ)^2
= RS
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