Tech: Polar Coordinates
-$\left( 2.5 , - \frac { 5 \pi } { 9 } \right)$
A) $( - 0.43 , - 2.46 )$
B) $( - 2.46 , - 0.43 )$
C) $( - 0.43,2.46 )$
D) $( 2.46 , - 0.43 )$

Question

Quizplus · Accepted Answer

The polar coordinates $(r, \theta)$ can be converted to Cartesian coordinates $(x, y)$ using the formulas $x = r \cos \theta$ and $y = r \sin \theta$. For $(2.5, -\frac{5\pi}{9})$, $x = 2.5 \cos(-\frac{5\pi}{9}) \approx -0.43$ and $y = 2.5 \sin(-\frac{5\pi}{9}) \approx -2.46$.

Tech: Polar Coordinates - (2.5,−5π9)\left( 2.5 , - \frac { 5 \pi } { 9 } \right)(2.5,−95π​)

Tech: Polar Coordinates
- $\left( 2.5 , - \frac { 5 \pi } { 9 } \right)$