I'll put my answer is the comments when I know what I'm looking for. I just need the power.
let's notice something, angles α and β are both in the I Quadrant, and on the first quadrant the x-coordinate/cosine and y-coordinate/sine are both positive.
The answer is points B.C.and D are on line n
Answer:
Triangle
Step-by-step explanation:
Area of a triangle
= 1/2 x base x height