Question

When two lines intersect outside a circle to form angle D, the general formula for the measure of angle D is

angle D= 1/2(mx-my). where x and y are intercepted arcs. This formula can be used when two secants form angle D. Describe

two other situations to which this formula can apply.

Answer 1

The three situations that the formula can be applied to include two secants intersecting the circle, a secant and a tangent intersecting the circle, and two tangents intersecting the circle. All three types of situations contain two lines intersecting to form an angle, as well as two intercepted arcs.

Explanation: