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Neel November 6th, 2016 05:53 AM

Height and distance
 
A sphere of radius r is lying on a ground. The sphere makes an angle of measure 60° at point A on the ground,then the distance of the centre of the sphere from A is ______ ?

skeeter November 6th, 2016 10:49 AM

Quote:

Originally Posted by Neel (Post 552614)
A sphere of radius r is lying on a ground. The sphere makes an angle of measure 60° at point A on the ground,then the distance of the centre of the sphere from A is ______ ?

maybe the center of the sphere makes an angle of measure $60^\circ$ with point A relative to the ground?

you have a sketch to clarify your problem statement?

skipjack November 6th, 2016 11:13 AM

On that basis, the answer would be r/sin(60°), which is 2r/√3, but a different interpretation would make the answer r/sin(60°/2), which is 2r.

skeeter November 6th, 2016 11:39 AM

either way, it's just a 30-60-90 triangle problem ... unless the ground isn't level :unsure:


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