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

[kingOFleo]

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
contact me nikvoodoo@gmail.com

 

[Office_Shredder]

You definitely haven't given enough information... how are s and phi related to y and x?

 

[kingOFleo]

i also can't understand this but this came in my exam
please try to this
hlp me