Simplify() does not handle complex trigonometrical statements well

[Julpe]

I am using the latest release 1.3.0 for my .NET project.

Calling .Simplify() on Entitys which contain complex trigonometrical statements such as
(sin(2*theta)*csc(theta))^2/4-cos(2*theta)-sin(theta)^2
or
(cos(2*theta)*sin(theta)^6*(-1)+cos(theta)*sin(theta)^5*sin(2*theta)-sin(2*theta)^2*sin(theta)^4/4)/sin(theta)^8-1+(sin(2*theta)*csc(theta))^2/4-cos(2*theta)-sin(theta)^2
are not simplified to 0 (as i am expecting).