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B
only one triangle exists
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C
two triangles are possible
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D
either no triangle or two triangles are possible
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Solution
The correct option is A no triangle exists Using cosine formula in the triangle, c2+b2−2cbcosA=a2 ∴c2+36−12√2c=8 ∴c2−6√2c+28=0 For this quadratic in c, D<0 ∴ No c is possible i.e. no triangle is possible.Correct option 'A'