The angle between the tangents at t...
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The angle between the tangents at those points on the curve y=(x + 1)(x-3) where it meets x-axis, is

JEE/Engineering Exams
Maths
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( y=(x+1) quad(x-3) ) When it meets x aris ( rightarrow quad y=0 ) ( 0=(x+1)(x-3) ) ( x=-1 quad, quad x=3 ) gradient at ( x=-1, frac{d y}{d x}=(x+1)(1)+(x-3)(1) ) ( frac{d y}{d x} mid=frac{2 x-2 mid}{x=-1}=[-4] ) gradient at ( x=3 ), ( mid 2 x 3-2=4 ) ( tan ^{-1}left(frac{8}{15}right)=theta )
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