2013 · Q72
Heights of two trees x and y (x>y); tops z apart; s = shortest distance between trees. Then s² equals
Elementary MathematicsGeometry
- Ax²+y²−z²−2xy
- Bx²+y²−z²
- Cx²+y²+z²−2xy
- Dz²−x²−y²+2xy
Explanation
s²=z²−(x−y)². Answer D.
Heights of two trees x and y (x>y); tops z apart; s = shortest distance between trees. Then s² equals
Explanation
s²=z²−(x−y)². Answer D.