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What is its ordinate of the point?The abscisa of a point is -3 and its distance from...
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We know that we can find the abscisa and the ordinate of a point, drawing perpendiculars from the given point to the x and y axis.
We'll form a right angle triangle, whose hypotenuse is the distance from origin to the point and cathetus is its abscisa.
We'll note the distance as r:
r = 5 units.
r^2 = 25 square units
We'll note the abscisa as x:
x = -3 units
x^2 = 9 square units
We'll calculate y using Pythagorean Theorem:
r^2 = x^2 + y^2
y^2 = r^2 - x^2
y^2 = 25 - 9
y^2 = 16
y1 = 4
y2 = -4
The ordinate of the point could be y = 4 or y = -4.
Posted by giorgiana1976 on May 27, 2011 at 3:52 AM (Answer #2)
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