Question

1/secA+tanA=1-sinA/cosA​

Answer 1

1/secA+tana=1-sina/cosA

1/1/cosa+sina/cosa=1-sina/cosa

1/1+sina/cosa=1-sina/cosa

cosa/1+sina=1-sina/cosa

cross multiply

cos^2a=1-sin^2a

cos^2a=cos^2a

LHS=RHS

hope its helpful

Answer 2

$\huge{ \underline{ \bold{ᴀɴsᴡᴇʀ....{ \heartsuit}}}}$

1/secA+tana=1-sina/cosA

1/1/cosa+sina/cosa=1-sina/cosa

1/1+sina/cosa=1-sina/cosa

cosa/1+sina=1-sina/cosa

cross multiply

cos^2a=1-sin^2a

cos^2a=cos^2a

LHS=RHS