How to find length AB..............................????
How to find length AB..............................????
Sumeet Gupta , 6 Years ago
Grade 12
Mechanics> How to find length AB.......................
1 AnswersAgrata Singh
Last Activity: 6 Years ago
Along AB least time is taken.There is a mathematical property which states that the length of perpendicular is the smallest distance between a point and a line. Therefore AB is perpendicular to incline
Let the point where line from A meets incline be O and theta = Q
Angle BOA=(90-Q)
AB/H=sin(BOA)=sin(90-Q)=cosQ
AB=HcosQ
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