3 years ago

How do I work out this problem? I’m not sure which circle theorems would apply etc.

1 answer:

8 0

Angle BCA =30 (angle in the same segment)
x=180-90-30=60
angle DBA =72/2 =36 (angle at centre twice angle at circumference)
y=36 (angles in alt segment)

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3 years ago

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