Question

plzz answer of this question

Answer 1

Sec@+Tan@= X......1

We know

Sec^2@-tan^@=1

(Sec@+tan@)(Sec@-Tan@) =1

(Sec@+tan@)(X)=1

(Sec@+tan@)=1/X......2

Subtracting eq 2 from 1

Sec@+Tan@=X

Sec@-Tan@=1/X

2Sec@= X+ 1/X

Sec@= (X^2+1)/2X. Answered

Answer 2

hope this will help u... :-)