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In a circle, the major arc is 3 times...

In a circle, the major arc is 3 times the minor arc. The corresponding central angles and the degree measures of two arcs are `90^0a n d\ 270^0` (b) `90^0a n d\ 90^0` `270^0a n d\ 90^0` (d) `60^0a n d\ 210^0`

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