Evaluate the following integrals:
i. 
ii. 
(i)
Formula = 
Therefore ,
Put x + log (sec x) = t ⇒
(ii)
Formula = 
Therefore ,
Put 
= t ⇒
1
Evaluate the following integrals:
i.
ii.
(i)
Formula =
Therefore ,
Put x + log (sec x) = t ⇒
(ii)
Formula =
Therefore ,
Put = t ⇒