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90⁰ =         radians           

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½ revolution =_____ radians

 How many radians are in about 57.296 angular degrees

 How many radians are there in one straight angle?

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1/6 revolution =_____ radians

 How many radians are there in one right angle?

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In a half circle there are ______ radians

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5 revolution =_____ radians

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There are approximately _____, radians in a complete circle

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2 revolution =_____ radians