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).
Answer:
22.05
Step-by-step explanation:
21/2 has 5 halves
10.5 divided by 5= 2.1
2.1= 1/2 2.1 x 10 = 21
2.1 / 2 = 1.05
21 + 1.05= 22.05
Answer:
r = 8
Step-by-step explanation:
59 = 7r + 3
Switch sides:
7r + 3 = 59
Subtract 3 from both sides:
7r = 56
Divide both sides by 7:
r = 8
A = 2/-3 which is -0.6666...
and b= 1/4.
so what you want to do is -0.66666666666 * 2 = -1.33333333333
then you want to do -1.33333333333 + .24 = (-1.093333333) is your answer
