How to solve both questiond plz help me out

How to solve both questiond plz help me out S u biect: Topic: Circles QI. O is centre of the circle, value Of x is: c) 120' d) 3fÅr (22 AC's the diameter of the circle. If ZACB 550. The value is:

Dear Student, 1st;In triangle OAC, OA=OC so it is a isosceles triangle and hence opposite angle will be equal.angle OCA=angleOAC=25 degreesimilarily, in triangle OAB. OA=OB, angle OAB=angleOBA= 35 degreeso angle BAC= angle OAB+angle OAC= 25+35 = 60 degreeNow BC is a common chord, and angle BOCis angle at center and BACis angle at cicumcenter so angle BOC= 2 angle BAC= 120 degreePlease post single query in a threadRegards

  • 1
GO OUT
  • 1
1.c

 
  • 1
What are you looking for?