Find value of x if o is center

Asked by yogeshthakur3300 | 28th Dec, 2018, 08:24: AM

Expert Answer:

From the diagram (vi)
 
Angle CAB = 40º
Arc CB = 2 × 40º = 80º             Angle subtended by an arc
Angle BCA = 80º  
Arc AB = 2 × 80º = 160º           Angle subtended by an arc
Arc CB + Arc AB + Arc DAB = 360º
80º + 160º + Arc DAB = 360º
Arc DAB = 120º
Angle BCD = x = 1/2 × 120º = 60º

Answered by Sneha shidid | 28th Dec, 2018, 09:02: AM