Q. 1 F4.3( 20 Votes )

# Four alternative

Given ACB = 65°

⇒∠ AOB = 2 × 65° = 130° { The measure of an inscribed angle is half the measure of the arc intercepted by it.}

m(AB) = 130°

So, m(arc ACB ) = 360° - m(AB) { Measure of a major arc = 360°- measure of its corresponding minor arc}

m(arc ACB ) = 360° - 130° = 230°

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