i have the 2 end points on a pine
a) (3, 58)
b) (3, 44)
i need to get polar form and the linear equation
i know i have to use y=mx+b
but how would i do that??
Your line is vertical, parallel to the y axis, and hence is undefined as far as $\displaystyle y = mx+c$ goes.
The line has the equation:
$\displaystyle x = 3 $
In polar coordinates $\displaystyle x = r\cos(\theta) $
Hence the furthest you can go is to say :$\displaystyle r\cos(\theta) = 3 $
Hence $\displaystyle r = \frac{3}{\cos(\theta)} $
The line has length $\displaystyle 58-44 $, so this gives you the magnitude, $\displaystyle r = 14 $: