Im caught up on this proof... need some help

CosX/SecX+SinX/CscX=Sec^2X-Tan^2X

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- Mar 10th 2010, 07:32 PMBrndo4uTrig Proof
Im caught up on this proof... need some help

CosX/SecX+SinX/CscX=Sec^2X-Tan^2X - Mar 10th 2010, 08:29 PMJhevon
- Mar 10th 2010, 11:40 PMdb5vry
Think of $\displaystyle secx$ as $\displaystyle \frac{1}{cosx}$ and $\displaystyle cosecx$ as $\displaystyle \frac{1}{sinx}$. when you've got something like

$\displaystyle \frac{cosx}{1/cosx}$ then do you think that this could equate to $\displaystyle cos^2 x$? Does this help you for the rest of the question if you can recall other identities that you need? - Mar 11th 2010, 05:33 AMBrndo4u
Yes, that I see what you guys are saying... I need to use the Recip ID, Which in the end will give me Sin^2 & Cos^2. That will become 1 and Sec^2 & Tan^2 will also be 1...So, 1 =1