Circle O is shown. Tangents C B and A B intersect at point B outside of the circle. The measure of the first arc formed is 150 degrees, and the measure of the second arc formed is 210 degrees.
In the diagram of circle O, what is the measure of?

30°
40°
50°
60°

step-by-step explanation:

the shape,the size and the distance

answer: y = -2.5x - 15

              (-6,0)

step-by-step explanation:

place r′ so that qr′ is parallel to the tangent.

now we get that ∠r′py=∠pr′q, where y is on the tangent, on the opposite side of p from x.

also, because of the symmetry, ∠r′py=∠qpx.

finally, note that no matter where we place r, as long as it's on the correct arc, we have ∠prq=∠pr′q.

stringing all these equalities together, we end up with ∠prq=∠qpx.

this picture will show how its going to look like.

hope this by jack monhen