Find the rectangular coordinates of the point with the polar coordinates (8, 3 divided by 2 pi).

Question

tkhunny · Answer

Have you considered the sine and cosine of the given angle?

jdoe0001 · Answer

$\large \begin{array}{llll}
\left(8,\frac{3}{2}\pi\right)\
\ \uparrow\quad \uparrow \
\ r\quad \theta
\end{array}\qquad 
\begin{array}{llll}
x=rcos(\theta)\
y=rsin(\theta)
\end{array}\qquad (x,y)$

anonymous · Answer

so would it be (8,0) @jdoe0001

tkhunny · Answer

"3 divided by 2 pi"  Is that $\dfrac{3}{2\pi}$?  Sure sounds like it.

Careful with notation.

No, it's not (8,0).  Think about $3\pi/2$.  Is that the positive y axis or negative y axis?