Question is incomplete, but it might help to know that
the slope or gradient of a line equals the tangent of the angle that this
line makes with the x-axis
e.g.
y = 2x + 7 has a slope of 2
tan^1 (2) = 63.4°
so the line makes an angle of 63.4° with the x-axis, or , tan 63.4° = 2
https://www.wolframalpha.com/input/?i=plot+y+%3D+2x+%2B+7
Since I can find the gradient in this question, how will I find the acute angle
1 answer