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# Calculus : Integration : Help

It is needed while I 'am solving time period of an pendulum in doing semicircular motion in gravity .....

$$\displaystyle{\int _{ 0 }^{ \cfrac { \pi }{ 2 } }{ \cfrac { dx }{ \sqrt { \cos { x } } } } }$$

Thanks

Note by Karan Shekhawat
1 year, 11 months ago

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See equation 14 and apply Euler's Reflection Formula. · 1 year, 11 months ago