Answer:
θ = π n + π/2 for n element Z
Step-by-step explanation:
Solve for θ:
1 + 2 cos(2 θ) + cos^2(2 θ) = 0
Write the left hand side as a square:
(cos(2 θ) + 1)^2 = 0
Take the square root of both sides:
cos(2 θ) + 1 = 0
Subtract 1 from both sides:
cos(2 θ) = -1
Take the inverse cosine of both sides:
2 θ = 2 π n + π for n element Z
Divide both sides by 2:
Answer: θ = π n + π/2 for n element Z
Answer:
geometric sequence; common ratio: 2
Step-by-step explanation:
because you would have to multiply a number to get to the next and the next number in line, this is geometric. The common ratio is 2 because each time the number increases you multiplying by two
Answer:
-1
Step-by-step explanation:
(f⚬h)(4) = f(h(4)) = f(-4+4) = f(0)
f(0) = 0-1 = -1
(f⚬h)(4) = -1
Answer:
530.66
Step-by-step explanation:
A = πr²
13 x 13 = 169
169 x 3.14 = 530.66
Let me know if this helps!
