Prove that
- prove that sin theta-cos theta+1/sintheta+costheta-1
- prove that the perpendicular at the point of contact
- prove that 1/u221A2 is irrational
- prove that 5 is an irrational number
- prove that a cyclic parallelogram is a rectangle
- prove that 3+2u221A5 is irrational
- prove that root 2 is irrational
- prove that root 5 is irrational
- prove that 1+1u003d2
- prove that root 3 is irrational
