prove that
2tan-1 [ { (a-b) / (a+b) }1/2 tan x/2 ] = cos-1{ (b +acos x ) / (a+bcos x) }
let ..............(1)
let ..............(2)
from (1) and (3)
therefore
using equation (2)
thus
hope this helps you.
cheers!!
prove that
2tan-1 [ { (a-b) / (a+b) }1/2 tan x/2 ] = cos-1{ (b +acos x ) / (a+bcos x) }
let ..............(1)
let ..............(2)
from (1) and (3)
therefore
using equation (2)
thus
hope this helps you.
cheers!!