MCQ
$\int_{}^{} {\frac{{dx}}{{1 - \sin x}}} = $
  • A
    $x + \cos x + c$
  • B
    $1 + \sin x + c$
  • C
    $\sec x - \tan x + c$
  • $\sec x + \tan x + c$

Answer

Correct option: D.
$\sec x + \tan x + c$
d
(d) $\int_{}^{} {\frac{{dx}}{{1 - \sin x}} = \int_{}^{} {\frac{{(1 + \sin x)}}{{1 - {{\sin }^2}x}}\,dx} } $

$ = \int_{}^{} {{{\sec }^2}x\,dx + \int_{}^{} {\tan x\,.\,\sec x\,dx} } $$ = \tan x + \sec x + c$.

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