# Math Help - Help me to solve this proof

1. ## Help me to solve this proof

Hi Forum,
Please do help me by solving below equation, kindly explain all steps

if Sec$+tan$ = p, Show that P2 – 1 / P2 + 1 = Sin$2. ## Re: Help me to solve this proof Where did P2 come from and how is it related to p? 3. ## Re: Help me to solve this proof Originally Posted by mvijay Hi Forum, Please do help me by solving below equation, kindly explain all steps Thanks in advance, if Sec$+tan$= p, Show that P2 – 1 / P2 + 1 = Sin$
Hi mvijay,

$\sec x+\tan x=p$

$\frac{p^2-1}{p^2+1}=\frac{(\sec x-\tan x)^{2}}{(\sec x+\tan x)^{2}}$

Simplify the expression and use the trigonometric identity, $\sec^{2}x=1+\tan^{2}x$. I am sure you can do it form here.

4. ## Re: Help me to solve this proof

Thanks a lot dear Sudharaka.........