Question

tan(1/2(cos^−1(x))=√1−x/1+x

Answer 1

Do you have any idea on starting this question?

Answer 2

no is say prove that their equal

Answer 3

Well that's the first step :)
Do you know what to do next?

Answer 4

no

Answer 5

We don't need to rush in and do everything in one go :)
We can firstly start of with:

tan(1/2(cos^−1(x))

Answer 6

Tan ( 1 )
2 Cos^-1(x)

Answer 7

Try changing the inverse trig ratio

Answer 8

You get something like:
Tan (Secx)
2

Answer 9

ok

Answer 10

So graphically, it looks something like this