Question
Establish the identity
tanx/2=cscx-cotx
tanx/2=cscx-cotx
Answers
drwls
cscx - cotx = (1 - cosx)/sinx
That is the standard formula for tan x/2.
For a proof of that, see
http://oakroadsystems.com/twt/double.htm#TanHalf
That is the standard formula for tan x/2.
For a proof of that, see
http://oakroadsystems.com/twt/double.htm#TanHalf