Question

Simplify the expression: 1) 1/tan^2x+1 2) sec^2x-1/secx-1 3)csc^2x(1-cos^2x) 4) x+1=0
Any help is much appreciated.

Answer 1

\[\frac{1}{tan^2x+1}= \frac{1}{sec^2x}=cos^2x\]
wonder why don't you try? trigs is fun and very easy, just playing with formula.

Answer 2

Iamnotalegend, Iamghostandevenaghostcandoit.

Answer 3

i like it when i understand it. I just get stuck. like how did you get from sec^2x=cos^2x

Answer 4

lol that was really clever