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Question

If in triangle ABC, tan A + tan B + tan C = 6 and tan A tan B = 2, then the triangle is

A
Right angled isosceles
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B
Aacute angled isosceles
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C
Aacute angled
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D
equilateral
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Solution

The correct option is C Aacute angled
In a ΔABC, tan A + tan B + tan C = tan A tan B tan C 6 = 2 tan C tan C = 3 tan A + tan B = 3
tan A = 1, tan B = 2 and tan C = 3 [ tan A tan B = 2]

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