Intrinsic Equation: Showing tan φ/2 = e^s

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kingOFleo
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For the curve with equation siny =e^x, where s is measured from the point(0,pi/2),show that e^s =tan?/2.
tan?/2 where?=phi
hlp me please
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You definitely haven't given enough information... how are s and phi related to y and x?
 
i also can't understand this but this came in my exam
please try to this
hlp me
 

Thread 'Finding the nth roots of a complex number'

There are two things I don't understand about this problem. First, when finding the nth root of a number, there should in theory be n solutions. However, the formula produces n+1 roots. Here is how. The first root is simply . Then you multiply this first root by n additional expressions given by the formula, as you go through k=0,1,...n-1. So you end up with n+1 roots, which cannot be correct. Let me illustrate what I mean. For this...
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