The area of a triangle with sides of lengths a and b and contained angle
(a) If a = 2 cm, b = 3 cm, and 0 increases at a rate of 0.2 rad/ min, how fast is the area increasing when
(b) If a = 2 cm, b increases at a rate of 1.5 cm/min, and
(c) If a increases at a rate of 2.5 cm/min, b increases at a rate of 1.5 cm/min, and
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