Answer:
x^4 + 8x^3 + 15x^2
Step-by-step explanation:
To solve the problem you must know that to change from Cartesian to polar coordinates you must write:
x = rcos (θ)
Where "r" is the radius
Likewise y = rsin (θ)
Therefore, in the expression r = 3cos (θ) one can write r as:
r = x / cos (θ)
So:
x / cos (θ) = 3cos (θ)
x = 3cos ^ 2 (θ)
The same for y ...
y = rsin (θ)
y = 3cos (θ) sin (θ).
Finally the correct answer is option 2.
x = 3cos ^ 2 (θ) y = 3cos (θ) sin (θ).
Amelio have 18 Nickels and 12 dimes!!
2.10−(6×0.05)−(12×0.10)−(12×0.05)= 0
Answer:
The second one
Step-by-step explanation:
B c A
Because B has c and a, which is part of A (A={a, b, c})
Answer: x = 20
Step-by-step explanation:
Right angle = 90
90 - 47 = 43
43 - 3 = 40
40/2 = 20
