If prove that I tried this by simplifying the statement and finally i get then i can't simplify this prove.please help me!!!

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- Jun 9th 2012, 08:29 PMsrirahulanTrig
If prove that I tried this by simplifying the statement and finally i get then i can't simplify this prove.please help me!!!

- Jun 9th 2012, 08:33 PMAmerRe: Trig
do you mean by the known pi or it is just another constant if it is the known pi then

is undefind - Jun 9th 2012, 08:53 PMTclackRe: Trig
- Jun 10th 2012, 04:10 AMsrirahulanRe: Trig
**pi**is a constant.i am really sorry to undefind it. - Jun 10th 2012, 04:46 AMBobPRe: Trig
The question doesn't seem to make much sense anyway, doesn't ?

- Jun 10th 2012, 07:47 AMTclackRe: Trig
Well, IF you meant sec squared(you didn't get back to me, so idk), then maybe This looks like it's getting somewhere

Attachment 24057

it looks like the right side will reduce to -1, so you can substitute in that cos(A+pi)/cos(A-pi) = 1 from above