Maths-
General
Easy

Question

The incentre of the triangle formed by the links x=0, y=0 and 3x+4y=12 is at

  1. open parentheses 1 half comma 1 half close parentheses
  2. (1,1)
  3. open parentheses 1 comma 1 half close parentheses
  4. open parentheses 1 half comma 1 close parentheses

hintHint:

A triangle in geometry is a particular kind of three-sided, two-dimensional polygon. The vertex of the triangle is where the two sides come together end to end. There is an angle created between two sides. Triangles have various characteristics, and each of these characteristics can be studied at various educational levels.
Here we have given the links x=0, y=0 and 3x+4y=12. We have to find the incentre of the triangle formed.

The correct answer is: (1,1)


    Given That:
    Here we have given the equation x=0, y=0 and 3x+4y=12.
    Lets find x and y, we get: 
    Let x = 0, then y will be:
    • 3(0)+4y=12
    • y=12/4 = 3
    Let y = 0, then y will be:
    • 3(x)+4(0)=12
    • x=12/3 = 4
    A = x1,y1 = 0,0
    B = x2,y2 = 0,3
    C = x3,y3 = 4,0
    Now,
    A C equals square root of left parenthesis 0 minus 4 right parenthesis squared plus left parenthesis 0 minus 0 right parenthesis squared end root
A C equals 4
B C equals square root of left parenthesis 4 minus 0 right parenthesis squared plus left parenthesis 0 minus 3 right parenthesis squared end root
B C equals square root of 16 plus 9 end root
B C equals square root of 25 equals 5
A B equals square root of left parenthesis 0 minus 0 right parenthesis squared plus left parenthesis 0 minus 3 right parenthesis squared end root
A B equals 3
    Coordinates of incentre are:
    equals open parentheses fraction numerator a x 1 plus b x 2 plus c x 3 over denominator a plus b plus c end fraction comma space fraction numerator a y 1 plus a y 2 plus a y 3 over denominator a plus b plus c end fraction close parentheses
equals open parentheses fraction numerator 5 left parenthesis 0 right parenthesis plus 4 left parenthesis 0 right parenthesis plus 3 left parenthesis 4 right parenthesis over denominator 5 plus 4 plus 3 end fraction comma fraction numerator 5 left parenthesis 0 right parenthesis plus 4 left parenthesis 3 right parenthesis plus 3 left parenthesis 0 right parenthesis over denominator 5 plus 4 plus 3 end fraction close parentheses
equals left parenthesis 12 over 12 comma 12 over 12 right parenthesis
equals left parenthesis 1 comma 1 right parenthesis
    >>> The Coordinate of incentre is (1,1).

    In order to answer this question, we used the formula for the coordinates of a triangle's in-center when the lengths of its sides a, b, and c are known, as well as the coordinates of its vertices. The incentre is (1,1).

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