Question: What is the hyperbolic cosine (cosh) of the natural logarithm of 2, divided by the hyperbolic sine (sinh) of the arctangent of 3?
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What is the sine of an angle in a right triangle if the length of the side opposite to that angle is 10 units, and the length of the hypotenuse is 15 units?
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What is the surface area of a sphere with radius "r"?