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The hill in the form of a right triangle has its foot at (19, 3). The inclination of the hill to the ground is 45°. Find the equation of the hill joining the foot and top. |
Answer» θ = 45° Coordinate of foot of hill = (19, 3) let equation of line be y = mx + c m = tan θ = tan 45° = 1 ⇒ y = x + c Substituting y = 3 & x = 19, 3 = 19 + c ⇒ c = -16 ∴ Equation of line: y = x - 16 = x - y - 16 = 0 |
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