I need help solving 7 and 8 . I'm lost

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

3 0

In 8, sum of interior angles will be 180
Let BAC and OBA be x
2x + 85 = 180
x = 180-85 divide by 2
also angles BAC AND OBA are same because O is the centre of the circle and OA and OB are the radius

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