
Bobosharif S. answered 04/08/18
Tutor
4.4
(32)
Mathematics/Statistics Tutor
2tan(x/2)-cscx=0
2sin(x/2)/cos(x/2)-1/sin(x)=0
2sin(x/2)/cos(x/2)-1/(2sin(x/2)cos(x/2))=0
1/cos(x/2)(2sin(x/2)-1/sin(x/2))=0
2sin(x/2)-1/(2sin(x/2))=0, assuming cos(x/2)≠0
sin2(x/2)=1/4
a)sin(x/2)=1/2
b)sin(x/2)=-1/2
I think you can solve equations a) and b) on your own.