Question

Please help, I'm so confused!:(
AB is tangent to the circle at B. m 13 years ago

Answer 1

An angle formed by a tangent and a secant measures half the difference of the intercepted minor arcs.

Answer 2

m<a = ( m(arc)CD - m(arc)BD )/2
14 = ( m(arc)CD - m(ard(BD) )/2

m(arc)CD - m(arc)BD = 28
m(arc)CD + m(arc)BD = 112
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2*m(arc)CD = 140
m(arc)CD = 70

70 + m(arc)BD = 112
m(arc)BD = 42 = x

An angle formed by a tangent and a chord that intersect on the circle is half the measure of the intercepted arc.

y = (1/2)*m(arc)CD = (1/2)*70 = 35

Answer 3

thank you so much!:)

Answer 4

You're welcome.