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November 6th, 2016, 05:53 AM   #1
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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 ______ ?
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November 6th, 2016, 10:49 AM   #2
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Originally Posted by Neel View Post
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?
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November 6th, 2016, 11:13 AM   #3
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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.
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November 6th, 2016, 11:39 AM   #4
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either way, it's just a 30-60-90 triangle problem ... unless the ground isn't level
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