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If tanA+tanB+tanC=tanA.tanB.tanC, then-...

If `tanA+tanB+tanC=tanA.tanB.tanC`, then-

A

A,B,C must be angles of a triangle

B

the sum of any two of A,B,C is equal to the third

C

A+B+C must be n integral multiple of `pi`

D

None of these

Text Solution

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The correct Answer is:
C
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ALLEN-BASIC MATHS,LOGARITHIM, TRIGNOMETRIC RATIO AND IDENTITIES AND TRIGNOMETRIC EQUATION -EXERCISE (O-1)
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