Math, asked by jayeshnrajapurkar19, 8 months ago

(cotA-cosecA)^=1-cosA/1+cosA​

Answers

Answered by abhi569
1

Step-by-step explanation:

= > ( cotA - cosecA )^2

cotA = cosA/sinA ; cosecA = 1/sinA

= > [ (cosA/sinA) - (1/sinA) ]^2

= > [ (1/sinA)( cosA - 1 ) ]^2

= > [ ( cosA - 1 )/sinA ]^2

= > ( cosA - 1 )² / sin²A

sin²A = 1 - cos²A = (1 - cosA)(1 + cosA)

= > (cosA-1)(cosA-1)/(1-cosA)(1+cosA)

= > ( 1 - cosA )/( 1 + cosA )

Proved.

Similar questions