1.

InΔABC, it is being given thatΔ=∣∣∣∣∣∣∣111cotA2cotB2cotC2tanB2+tanC2tanA2+tanC2tanA2+tanB2∣∣∣∣∣∣∣=0,then the triangle must be

Answer» InΔABC, it is being given that

Δ=



111cotA2cotB2cotC2tanB2+tanC2tanA2+tanC2tanA2+tanB2



=0,


then the triangle must be


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