1.

Assertion (A) : In a DeltaABC the minimum value of tan^(2)A//2+tan^(2)B//2+tan^(2)C//2 is 1 Reason (R) : a^(2)+b^(2)+c^(2)-ab-bc-ca= ge0

Answer»

A is FALSE, R is TRUE
A is true, R is false
A is true, R is true and R is not correct EXPLANATION of A
A is true, R is true and R is correct explanation of A

Answer :D


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