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CBSE Class 10 Answered

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Asked by Trisha Gupta | 03 Nov, 2021, 12:45: AM
answered-by-expert Expert Answer
begin mathsize 16px style If space the space three space points space are space collinear space then space the space Area space of space straight a space triangle space is space zero. We space have comma Area space of space straight a space triangle space equals space 1 half open square brackets straight x subscript 1 open parentheses straight y subscript 2 minus straight y subscript 3 close parentheses plus straight x subscript 2 open parentheses straight y subscript 3 minus straight y subscript 1 close parentheses plus straight x subscript 3 open parentheses straight y subscript 1 minus straight y subscript 2 close parentheses close square brackets rightwards double arrow 1 half open square brackets 3 open parentheses 6 minus 15 over 2 close parentheses plus straight m open parentheses 15 over 2 minus 5 close parentheses plus 1 half open parentheses 5 minus 6 close parentheses close square brackets equals 0 rightwards double arrow fraction numerator negative 9 over denominator 2 end fraction minus 15 over 2 straight m minus 1 half equals 0 rightwards double arrow negative 9 minus 15 straight m minus 1 equals 0 rightwards double arrow negative 15 straight m equals 10 rightwards double arrow straight m equals fraction numerator 10 over denominator negative 15 end fraction equals negative 2 over 3 end style
Answered by Yasmeen Khan | 03 Nov, 2021, 03:03: PM

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CBSE 10 - Maths
find the centroid of the triangles with vertices: (-1,3),(6,-3) and (-3,6)
Asked by kadaramyadav | 02 Nov, 2023, 11:02: PM
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CBSE 10 - Maths
draw the graph of the equations y=x and x=1. Hence , find the area of the triangle formed by these two lines and the x-axis
Asked by priyankakiran2017 | 25 May, 2022, 06:59: AM
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CBSE 10 - Maths
name the special quadrilateral formed by the lines x=2,x=-2 ,y=3 and y=-2and hence find its area
Asked by priyankakiran2017 | 25 May, 2022, 06:58: AM
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CBSE 10 - Maths
solve
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Asked by Trisha Gupta | 03 Nov, 2021, 12:45: AM
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CBSE 10 - Maths
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Asked by arindeep.singh | 17 Sep, 2020, 11:19: AM
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CBSE 10 - Maths
in each of the following find the value of k for which the points are collinear . 1) (7,-2), (5,1) ,(3,k)
Asked by jaiharekrushna75 | 11 Sep, 2020, 11:56: AM
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CBSE 10 - Maths
In each of the following, find the value of a for which the given points are collinear.  (ii) (a-3-2a), (-a+1,2a) and (-4-a,6-2a)
Asked by dvijaybs45 | 07 Sep, 2020, 08:57: PM
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CBSE 10 - Maths
The 27th question...
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Asked by subbukum | 13 Feb, 2020, 12:28: PM
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CBSE 10 - Maths
Find the area of the Triangle ABC, with vertex A(1,-4) and midpoint of AB and AC as X(2,-1) and Y(0,-4) respectively.  
Asked by nijurajeev7276 | 08 Jan, 2020, 09:52: AM
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CBSE 10 - Maths
in RD Sharma's solution , ex.6.5 , Q.24, why we have taken the value 1/2 with both positive and negative sign. What is the reason for doing this?????
Asked by priyalpathak06 | 05 May, 2019, 11:55: PM
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