Question

prove cot^2x-cos^2x=cos^2x cot^2x

Answer 1

try writing in terms of sin and cos first

Answer 2

i would play with the left til I got the right

Answer 3

but first step for me would be to write in terms of sin and cos

Answer 4

you will need to some about writing the 2 terms on the left as 1 term (hint combine fractions)