Question

Find the inclination,Ø, of the line $2x - y = 0$

Answer 1

Given 2 x - y = 0,

Re-arranging, y =2 x

comparing y = mx + c,

m = 2 ,

$\begin{gathered} \text{The angle of inclination, tan }\theta\text{ = m =2,} \\ \text{ tan }\theta\text{ = 2, } \\ \text{ }\theta\text{ = }\tan ^{-1}\text{ (2 )} \\ \text{ }\theta\text{ = 63.4 degrees (B)} \end{gathered}$