Question

How do you simplify the expression `costhetatantheta`?

Answer 1

`sintheta`

Explanation:

Recall that `tantheta=sintheta/costheta`. We then have

`cancelcosthetasintheta/cancelcostheta=sintheta`

Answer 2

`sintheta`

Explanation:

`"using the "color(blue)"trigonometric identity"`

`•color(white)(x)tantheta=sintheta/costheta`

`rArrcosthetatantheta=cancel(costheta)xxsintheta/cancel(costheta)=sintheta`