Answer:
Step-by-step explanation:
In the rectangular complex number -9√3 + 9i, which has a standard form a + bi, the a = -9√3 and the b = 9. We need this in polar form (r, θ) where
and filling in:
(notice we do not put the i in there with the 9).
so
r = 18. Now let's move on to the angle, which is a little more difficult. The angle is found in the inverse tangent ratio:
so filling that in, we have:
Since tangent is the side opposite over the side adjacent, y is positive and x is negative in the second quadrant. This is a 30 degree angle in QII, which has a reference angle of 150 degrees. This angle in radians is
, so the polar form of that number is (18,
)
Answer:

Step-by-step explanation:
we have

we know that
f(3) is the value of the function for the value of x equal to 3
so
substitute the value of x=3 in the function

Quadrant 2 or 4. All points in quadrant 1 are both positive, all points in quadrant 3 are both negative.
Yessssssssssssssssssssssssss
Answer:
okay for #2 do 3 times 3.14 divided by 4
Step-by-step explanation:
do that and tell me what you get