calculate the angles marked with letters. O is the centre of the circle wherever given
send me a pic of you answer
Attachments:
Answers
Answered by
0
Answer:
a = 50°, b = 100° and c = 40°
Step-by-step explanation:
a = 50° [ exterior angle of a cyclic quadrilateral is equal to interior opposite angle ]
b = 2a => 2*50° => 100° [ angle subtended by an arc at the centre is twice the angle subtended at any point on the circumference of the circle ]
C = 1/2 [180 - b] => 1/2 [ 180 - 100 ] => 40°
Similar questions