What is the middle angle of the sector equivalent to the costs incurred on Royalty?

The local park at Raghu’s house is in the shape of a triangle. There are 4 posts along the longest side of the park and 2 and 3posts along the other two sides respectively. If none of these posts is at any of the corners of the park, find the number of triangles that are possible with vertices at these posts.

A straight line passes through the point (3, 2) and is perpendicular to the straight line x+ y = 3 and is perpendicular to the straight line x + y = 3. Find its equation