could anyone please help? If you would please explain one part, I can attempt to do the other. Thanks in advance!
Directions: verify that the x-values are solutions of the equation.
(a.) x= pi/3
(b.) x= 5pi/3
First, convert the radians to degrees
Then, use your calculator to find the decimal values for cosx
For example, in question a)
cos(pi/3) or cos60 = 0.5
Then sub in the value of 0.5 in the equation "2cosx - 1 = 0"
2cos(0.5) - 1 = 0