Question

1 + cosec A/cosec A=cos2 A/
1 - sin A​

Answer 1

Answer:

Step-by-step explanation:

+cosec A)/ cosecA = cos2A/( sinA-1)

LHS:

(1+cosecA)/cosec A

= (1/cosecA) + (cosecA/cosecA)

= sinA+1

=sinA+1 X (1-sinA/1-sinA)

=sin2A-1/1-sinA

=cos2A/1-sinA

=RHS.