Please help me with this
1 answer:
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1. w= 8.5
2. p= 8
3. r= -63
4. h= 4
5. m=16
did the work on paper 3
2. p= 8
3. r= -63
4. h= 4
5. m=16
did the work on paper 3
Answer:
2π/3, 4π/3
Step-by-step explanation:
I interpret your question as asking us to solve the equation
2cos(x) + 1 = 0
2cos(x) = -1
cos(x) = -½x
x = arccos(-½), 0 ≤ x ≤2π
Since the cosine is negative, x must be in the second or third quadrant.
Referring to the unit circle, we find that
x = 2π/3 (120°) or x = 4π/3 (240°)
