Q14 of 25 Page 276

The circular value of each internal angle of a regular hexagon is

Sum of internal angle of a polygon = 180(n-2)


⇒ internal angle of a regular polygon=


For hexagon n = 6




⇒ 120°



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14

The end point of the minute hand of a clock rotates in 1 hour

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radian equals to

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The measurement of Θ in the relations to S=rΘ is determined by

A. sexagesimal system


B. circular system


C. Those two methods


D. None of these

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In cyclic quardrilateral ABCD, if ∠a=120°, then the circular of ∠C is