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find k , if the 4x-y=1 is perpendicular to the line 5x-ky=2?

-tan(180)=?

-tan(180) =?

sin 85 degree

Please provide list of fathers of all important fields for ssc cgl and chsl

Hindi language available or not?

­ Mehdi can complete a work in 25 hours. If he is joined by Jahnavi who is 50% more efficient, in what time will they together finish the work?

a line passing through the origin perpendicular cuts the line 2x + 3y = 6 at point M. find M?

LG:WM:DC:?

tell about ssc chsl syllabus