Answer :



(i) Join OB.


OAB = OBA = 40°[Because OB = OA]


OCB = OBC = 30°[Because OB = OC]


ABC = OBA + OBC


ABC = 40°+ 30°


ABC = 70°


AOC = 2 × ABC


AOC = 2 × ABC


AOC = 2 × 70°


AOC = 14


(ii)


BOC = 360° - (AOB + AOC) [Sum of all angles at a point = 360°]


BOC = 360° - (90° + 110°)


BOC = 360° - 200°


BOC = 160°


We know that BOC = 2 × BAC


BAC = (1/2) × BOC


BAC = (1/2) × 160°


BAC = 8


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

In Fig. 16.195, <RD Sharma - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

PQRS is a RD Sharma - Mathematics

ABCD is a RD Sharma - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

<span lang="EN-USRS Aggarwal & V Aggarwal - Mathematics

ABCD is a RD Sharma - Mathematics