Answer:
w = π/2
Step-by-step explanation:
I used trig identities (double angle) to solve this problem.
Step 1: Rearrange problem
2cos²(w) - cos(w) - 1 = 0
2cos²(w) - 1 - cos(w) = 0
Step 2: Trig Identity
cos2w - cos(w) = 0
Step 3: Combine like terms
cosw = 0
Step 4: Solve
w = cos^-1(0)
w = π/2
I may have done it wrong so don't rely too much on me
2n^2-7n+6=0
2n^2-4n-3n+6=0
2n(n-2)-3(n-2)=0
(2n-3)(n-2)=0
n=3/2, n=2
the answer shows in the picture
Answer:
The answer should be -2.2
Answer:

Step-by-step explanation:
