# What is the polar form of ( 4,0 )?

Feb 2, 2016

$\text{Rectangular form: } \left(x , y\right) = \left(4 , 0\right)$
$\text{Polar form: } \left(r , \theta\right) = \left(4 , 0\right)$

#### Explanation:

The point $\left(x , y\right) = \left(4 , 0\right)$ is on the X-axis
so $\theta = 0$

Its distance from the origin is $\sqrt{{4}^{2} + {0}^{2}} = 4$
so $r = 4$