(sinθ/(1-cotθ)) + (cosθ/(1-tanθ)) = cosθ + sinθ

[PsychoMessiah]

Homework Statement

I have to prove that:

(sinθ/(1-cotθ)) + (cosθ/(1-tanθ)) = cosθ + sinθ

Homework Equations

The Attempt at a Solution

Here's my attempt at solution...

 

[th4450]

Very close!
a² - b² = ?

 

[PsychoMessiah]

OMG how unbelievably stupid of me...
obviously (a - b)(a + b)

thanks a lot bro... :D

 

[Mark44]

th4450,
If you post a photo of your work in another thread,
1) Take a better picture. This one was so dark it was barely legible.
2) Shrink the image so that it is no larger than 800 x 600 pixels.