In x-y plane, there is a right triangle ABC (∠B=90o). If the length of AC is 25 and the slope of line segment AC is 4/3, what is the length of AB? Choose one:
A) 12 B) 18 C) 24 D) 20 E) 40
Slope = Change in Vertical 20irection/Change in Horizontal 20irection = 4/3   Change in Vertical 20irection = 4x = AB   Change in Horizontal 20irection = 3x = BC   AB^2 + BC^2 = 25^2   16x^2 + 9x^2 = 625   25x^2 =625   x^2 = 25   x = 5   Therefore AB = 5*4= 
<gadget id="calculator">5*4</gadget>
<output>20</output>
20   Answer: 20
<result>D</result>
In x-y plane, there is a right triangle ABC (∠B=90o). If the length of AC is 25 and the slope of line segment AC is 4/3, what is the length of AB?