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प्रश्न
Find the slope of the line perpendicular to AB if : A = (3, −2) and B = (−1, 2)
उत्तर
Slope of AB = `(2 + 2)/(-1 - 3)`
Slope of AB = `4/(-4)`
Slope of AB = –1
Slope of the line perpendicular to AB = `(-1)/"Slope of AB"`
Slope of the line perpendicular to AB = `(-1)/(-1)`
Slope of the line perpendicular to AB = 1
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