Let e be the line through A (-4,5) and B (3. t) that is perpendicular to the line through P (1, 3) and Q(-4, 2). Find the value of t.

Let l be the line through A (4, -3) and B (t, -2) that is parallel to the line through
P(-2, 4) and Q (4, -1). Find the value of t.

Determine the signs of sino coso and tane if O is an angle in standard position and
P (2,-5) is a point on its terminal side.​