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Question
Two opposite sides of a square are given by the lines 5x + 12y + 18 = 0 and 5x + 12y – 21 = 0. Find the length of diagonal of the square.
Two opposite sides of a square are given by the lines 5x + 12y + 18 = 0 and 5x + 12y – 21 = 0. Find the length of diagonal of the square.
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4
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Solution
The correct option is A 3
Given lines are 5x + 12y + 18 = 0……………….(i) and 5x + 12y – 21 = 0………………….(ii)
Length of the side = distance between lines (i) and (ii) is given by
D = 
= 
= 
= 3
Length of the diagonal = 3
; Option(a).
Given lines are 5x + 12y + 18 = 0……………….(i) and 5x + 12y – 21 = 0………………….(ii)
Length of the side = distance between lines (i) and (ii) is given by
D = = = = 3
Length of the diagonal = 3; Option(a).
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