A kite is flying 90 feet above the ground and is moving away horizontally at a rate of 7 f t divided by s. At what rate is the angle between the string and the horizontal changing when 190 feet of the string has been let out? a.) fraction numerator d theta over denominator d t end fraction equals 63 over 3610 fraction numerator r a d over denominator s e c end fraction b.) fraction numerator d theta over denominator d t end fraction equals fraction numerator short dash 63 over denominator 3610 end fraction fraction numerator r a d over denominator s e c end fraction c.) fraction numerator d theta over denominator d t end fraction equals fraction numerator short dash 9 over denominator 3691 end fraction fraction numerator r a d over denominator s e c end fraction d.) fraction numerator d theta over denominator d t end fraction equals 9 over 3610 fraction numerator r a d over denominator s e c end fraction