Question

diagram

Answer 1

triangle ACB is right triangle, because AB is diameter of the circle

Answer 2

triangle BAP is right triangle since PA is tangent to circle at A, and BA is a diameter

Answer 3

angles CAP and B are congruent, because angle P is their complement.
The two triangles CAP and APB are two right triangles
the two triangles are similar by AA Postulate

Answer 4

can u plse draw diagram

Answer 5

@sirm3d

Answer 6

right angles PAB (tangent line PA at A perpendicular to diameter) and ACB (hypotenuse of inscribed triangle in a circle is diameter of the circle)