3. In the diagram AC is a diameter of circle O. Points P and B are on the circle. a. Explain why k must be 2.
b. Find the coordinates of point O and the radius r of the circle.
c. Find the measure of minor arc AB. Give your answer accurate to at least one decimal place.

Thank you!

1)is not similar since corresponding sides are not in the same ratio

2)are similar since corresponding sides are in the same ratio and corresponding angles are equal

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step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq

it should be a.

hope it