Question

What is `cos^2theta-sectheta` in terms of `sintheta`?

Answer 1

`cos^2theta-sectheta=1-sin^2theta-1/sqrt(1-sin^2theta)`

Explanation:

`cos^2theta-sectheta`

= `1-sin^2theta-1/costheta`

= `1-sin^2theta-1/sqrt(cos^2theta)`

= `1-sin^2theta-1/sqrt(1-sin^2theta)`