Asked by Peter
Establish the identity
tanx/2=cscx-cotx
tanx/2=cscx-cotx
Answers
Answered by
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
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