Problem by Rishabh Dubey 1
Geometry
Level
pending
Find the angle subtended at the centres of a radius 3cm by an arc of length 1cm.
The answer is 19.090.
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1 solution
The number of radian in the angle =arc/radius; =1×radian/3; =1×2×right angle/3×pie; =2×90/3pie; =60/pie; =60×7/22; =19.090