Let (in radians) be an acute angle in a right triangle and let and , respectively, be the lengths of the sides adjacent to and opposite. Suppose also that and vary with time. At a certain instant units and is increasing at unit/s, while and is decreasing at units/s. How fast is changing at that instant?.
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Let (in radians) be an acute angle in a right triangle and let and , respectively, be the lengths of...
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