Question

change point into rectangular for (4,4pi/3) need help don't understand how to do this type of questions.
A.(-2,sqrt3)
B. (-2,2sqrt3)
C.(2, -2sqrt3)
D. none

Answer 1

The point your given is in polar form. The first number is the radius (r), the second is the angle from the positive x-axis (theta).:

Answer 2

using trig, we can find the formulas:
x= r*cos(theta)
y = r*sin(theta)
(x,y) is the point in rectangular coordinates

Answer 3

\(\large \left(\begin{array}{cccllll}
&4,&\cfrac{4\pi}{3}\\
\hline\\
&\uparrow &\uparrow \\
&r&\theta
\end{array}\right)\qquad
\begin{array}{llll}
x=rcos(\theta)\\
y=rsin(\theta)
\end{array}\)

Answer 4

so just find "x" and "y" and your rectangular coordinates will be (x,y) :) as DDCamp said