The angle at the vertex of a cone is measured using a 30mm diameter coin as shown in the figure below. If the coin lies 3.72mm below the top of the cone, determine the value of angle θ.
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Expert's answer
2020-07-23T18:31:37-0400
Let the cone be imagined as shown in the above figure.
Here AB is the diameter of the coin and NB is the radius of the coin.
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