Question

Tangents and Circles. Solve for X.

Answer 1

∠ BCD = 42°

Explanation:

the measure of the secant- tangent angle BCD is half the difference of the intercepted arcs, that is

∠ BCD =
`(1)/(2)` (EB - BD) =
`(1)/(2)` (157 - 73)° =
`(1)/(2)` × 84° = 42°