Hey need help on these q(c) can we just let theta=pi
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Originally Posted by smmmc Hey need help on these q(c) can we just let theta=pi No, this is an identity that you are supposed to show is true for any $\displaystyle \theta$ and $\displaystyle \phi$. One way to do this is to replace all the $\displaystyle \cot$'s on the right by $\displaystyle 1/\tan$'s and simplifying. CB
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