A quadrilateral ABCD is inscribed in a circle with AD as diameter. If AD=4 and AB=BC=1, find the length of CD
+1486 A quadrilateral ABCD is inscribed in a circle with AD as a diameter. If AD=4 and AB=BC=1, find the length of the line segment CD.
1) Find the measure of angle AOM sin(AOM) = AM / AO ∠AOM = 14.478°
2) ∠AON = ∠AOM * 2 ∠AON = 28.955°
3) Angles ∠AON and ∠ADC are congruent.
4) CD = cos(ADC) * AD = 3.5 
