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[" 24.If in a triangle "ABC,(cos A)/(a)=...

[" 24.If in a triangle "ABC,(cos A)/(a)=(cos B)/(b)=(cos C)/(c)" ,then "],[" triangle is "],[[" (a) right angled "," (b) obtuse angled "],[" (c) equilateral "," (d) isosceles "]]

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