Results 1 to 4 of 4

- Jan 20th 2013, 01:02 PM #1
## tan(A/2) + cot(A/2) = 2cosecA

Hello

Could someone please help me start with proving the following identity:

I'm trying to show that the L.H.S = the R.H.S. I've tried finding the half angle formula for , but it looks like a quadratic. I have also tried writing the L.H.S as a single term. I'm totally stuck. A hint would be greatly appreciated.

Thank you

- Jan 20th 2013, 01:18 PM #2

- Jan 20th 2013, 01:28 PM #3

- Jan 20th 2013, 01:45 PM #4

Click on a term to search for related topics.