Answer:
<em>π/2 and π/3</em>
Step-by-step explanation:
Given the equation 2cos²x - cosx = 0, to find the solution to the equation, we will follow the following step.
let P = cosx
The equation becomes 2P²-P = 0
P(2P-1) = 0
P = 0 and 2P-1 = 0
P= 0 and P = 1/2
Since P = cosx
cosx = 0 and cos(x) = 1/2
If cos(x) = 0
x = cos⁻¹0
x = 90⁰
x = π/2
If cos(x) = 1/2
x = cos⁻¹1/2
x = 60⁰
x = π/3
<em>Hence the solutions to the equation are π/2 and π/3.</em>
Answer:
Step-by-step explanation:
Switch sides:
Add/Subtract the numbers: 
Hope I helped, if so may I get brainliest and a thanks?
Thank you, have a good day! =)
3x < -6
x < -6/3
x < -2
Therefore, the solution set is {x | x < -2}.
It would be
A) 13 = 9 + 4
B) 7 - 4 = 3
and
E) 20 divided by 4 = 5
Since all of these values would match on each side of their respective equations after solving
