How do you solve #4cos^2x-5sinxcosx-6=0#?
1 Answer
Dec 3, 2015
solve trig equation.
Explanation:
Try to transform the equation into a linear function in sin 2x and
cos 2x. Replace
5sin x.cos x by
Call
This trig equation is insolvable since any cos must be < 1.
The number 6 should be 5 or less in order to make the equation solvable.