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Please please please help!!!
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Please please please help!!!

Please please please help!!!-example-1
User Pradeep Gollakota
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3.3k points

1 Answer

4 votes

Answer:

a = 35, b = 40, c = 17.5

Explanation:

The sum of the 3 arcs on the semicircle above the diameter = 180° , that is

65 + 80 + a = 180

145 + a = 180 ( subtract 145 from both sides )

a = 35

The inscribed angles b and c are half the measures of their intercepted arcs

b =
(1)/(2) × 80 = 40

c =
(1)/(2) × 35 = 17.5

User Muhammad Zeeshan
by
3.6k points
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