Question

2. What is the acute angle between the lines x+y=0 and y=0
​

Answer 1

Answer:

y = o lies on x axis and x=y may make an angle of

45° i hope

Answer 2

Answer:

Given

x−y=0

y=0 represents x−axis

So the slope of line x−y=0 is −

−1

1

=1

⟹tanθ=1

tanθ=tan

4

π

θ=

4

π

θ=45

∘