1.

1+tan^2/(1+sec)=sec​

Answer»

Step-by-step EXPLANATION:

LHS

1+tan^2/(1+SEC)=sec

tan^2

= 1+ ---------------------

1+sec

1+ sec+tan^2

= ----------------------. [1+tan^2=sec^2]

1+sec

sec^2+ sec

= -----------------

1+sec

sec(sec+ 1)

= -----------------

1+sec

= sec (RHS) PROVE


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