The answer for this question is 8
All triangles add up to 180 so it’s 20°
30° the angle is ro small to be 90° to small to be 60° and to small to be 120°
perp to x-3y=2 thru (2,4)
For perpendicular we swap the coefficients on x and y, negating one
3x + y = some constant
We get the constant in the obvious way from the point
3x + y = 3(2) + 4 = 6 + 4 = 10
Answer: 3x + y = 10
