A trigonometric identity is given by cos2(x/2)=(tanx+sinx)/2.tanx verify that the identity is correct by calculating each side of the equation substituting x=pi/5

 Problem :
         A trigonometric identity is given by cos2(x/2)=(tanx+sinx)/2.tanx verify that the identity is correct by calculating each side of the equation substituting x=pi/5


>> %A trigonometric identity is given by cos2(x/2)=(tanx+sinx)/2.tanx verify that the identity is correct by calculating each side of the equation substituting x=pi/5%
>> x=pi/5;
>> LHS=cos(x/2)^2


LHS =


0.9045


>> RHS=(tan(x)+sin(x))/(2*tan(x))


RHS =


0.9045