Question

Help with Finding the angle between 2 lines

Answer 1

Find the angle between the following two lines:



y = x

x − 2y = 0

Answer 2

y=1/2x

Answer 3

1/2-1=-1/2

1/2*1+1=3/2

Answer 4

\[\tan^{-1}(\frac{ -1/2 }{ 3/2 })\]

Answer 5

Theta=18.4 @freckles does this look right?

Answer 6

because its \[\left| \frac{ -1/2 }{ 3/2 } \right|\]

Answer 7

@Loser66 does this look right?

Answer 8

we will do it your way since it is easier :p
ok

let's look the slopes
\[m_1=1, m_2=\frac{1}{2} \\ m_1-m_2=\frac{1}{2} \\ 1+m_1 \cdot m_2 =1+1 \cdot \frac{1}{2}=\frac{3}{2} \\ \text{ so yes you have } |\frac{\frac{1}{2}}{\frac{3}{2}}|=|\frac{1}{2} \cdot \frac{2}{3}|\]

Answer 9

then you do arctan( of that )

Answer 10

can confirm 18.4 is what i got so I did it right this time

Answer 11

yea to the nearest 10th yeah

Answer 12

Thank you :D

Answer 13

np