show that (2 - cos^2 x) / (1 + sin^2 x) is equal to 1
I have substituted cos^2 x by (1 - sin^2 x) but I don't know what to do next
C2 maths help watch
- Thread Starter
- 19-05-2017 12:50
- 19-05-2017 13:00
Multiply both sides by (1+Sin^2x) then expand the bracket, to get 2-cos^2x=1+sin^2x. so 1-cos^2x=sin^2x and then sin^2x+cos^2x=1.