Question

root 1-cosA/1+cosA=?​

Answer 1

Heya

_____________________________

1 - Cos A = 2Sin² A/2

And

1 + Cos A = 2Cos² A/2

=>

√{(1- Cos A )/( 1 + Cos A )} =

Tan A/2

Answer 2

Answer:

SecA - CotA

Explanation :

Multiply 1-cosA in numerator and denominator