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Show that the fucntion given by f(x) = s...

Show that the fucntion given by `f(x) = sinx` is :
(a) strictly increasing in `(0,(pi)/(2))`
(b) strictly decreasing in `((pi)/(2),pi)`
(c ) neither increasing nor decreasing in `(0, pi)`.

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MODERN PUBLICATION-APPLICATIONS OF DERIVATIVES-NCERT - FILE (Question from NCERT Book) (Exercise 6.2)
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