Question

CBSE class 9 circles chapter question​

Answer 1

Answer:

35, 5, 40 respectively

Step-by-step explanation:

as ab is diameter so angle arb = 90

now angle bar = 180 - (50 + 90) = 40

now parb is cyclic so sum of opposite angles = 180

ie angle par + angle rbq = 180

so 55 + 40 + 50 + angle pba = 180

angle pba = 180 - 145 = 35

now abpq is cyclic

so angle apq + abq = 180

apq = 180 - 85 = 95

angle apb = 180 - (55 + 35) = 90

so angle bpq = 95 - 90 = 5