Question

सिद्ध कीजिए कि (1 – cosA) /(1 + cosA) = (cosecA – cotA)²

Answer 1

(1-cos A)/(1+cos A)=(cosec A - cotA)2

(1/sin A - cos A/sin A)2

(1-cos A/Sin A) 2

(1-cos A) (1-cos A)/sin 2 A

(1-cos A) ( 1-cos A)/(1+cos A) (1+cos A)

[(1-cos A) and (1+cos A are cancelled ]

So,

(1-cos A)/(1+cos A)

HENCE PROVED

Refer the picture once

Answer 2

Step-by-step explanation:

correct answer!!!!.....