Question

Express as a function of a positive acute angle:? cos 240 sin(-110)

Answer 1

And their product is `+ cos 60^0 * sin 70^0`

Explanation:

`cos 240^0 = cos (360 - 240)^0 = cos 120^0`

`= - cos(180 - 120)^0 = - cos 60^0`

`sin (-110^0) = - sin 110^0 = - sin (180 - 110)^0`

`= - sin 70^0`