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:
$22
Step-by-step explanation:
If she wants to own 26 necklaces. You take that number and subtract the four she already owns, leaving you with 22.
The distance between two points is given by:
d² = (x₂-x₁)² + (y₂ - y₁)²
9 = (x₂ - 4)² + (y₂ - 2)²
Now, we can check different ordered pairs in this equation to see which satisfies it:
The one that satisfies this equation is (4 , -1).
Answer:
Step-by-step explanation:
x/-7<14
-x<98
x>-98
Answer:
Atotal = 697.5 ft^2
Step-by-step explanation:
See picture.
Make three separate rectangles with Area 1, Area 2 and Area 3.
Total area (Atotal) of the pool cover, is the addition of all seperate areas.
Atotal = Area 1 + Area 2 + Area 3
See picture and use those measurements, (all in feet)v
Atotal = (10 * 7.5) + (8 * 7.5) + (45 * 12.5)
Atotal = ( 75 ) + ( 60 ) + ( 562,5 )
Atotal = 697.5 ft^2
