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Distance of a point (2,5) from the line 3x+y+4=0 measured parallal to the line 3x-4y+8=0 is:a. 15/2b. 9/2c. 5d. none |
Answer» `3x-4y+8=0` m=3/4 `(k-5)/(h-2)=3/4` `4k-20=3h-6` 3h-4k=-14-(1) 3h+k=-4-(2) Subtracting equation 2 from equation1 k=2 h=-2 PQ=`sqrt((2+2)^2+(5-2)^2)` PQ=`sqrt(4^2+3^2)` PQ=`sqrt25` PQ=5cm |
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