Question

O is centre of circle angle bco is equal to 30 degree determine the value of x and y

Answer 1

Answer:

x=30 y= 15

Step-by-step explanation:

as AOC is 90

ABD is 45

so x+y+90+45 = 180

x+y = 180-135=45

x+y=45

ABO = x

x + OBA = ABD

take OBA as a

x + a =45

y+a = 30

cancel out a

x-y = 15

x+y =45

x+y+x-y = 15+45

=2x = 60

x = 30

now

x+a = 45

a = 45-30 = 15

y +a = 30

y+15 =30

y = 15