If A+B+C= pi, then prove that sinA+sinB+sinC+cos A+cosB+cosC+(tan 2 A+tan 2 B+tanC)+cosecA+cosec 3 B+cosecA=0

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If A+B+C= pi, then prove that sinA+sinB+sinC+cos A+cosB+cosC+(tan 2 A+tan 2 B+tanC)+cosecA+cosec 3 B+cosecA=0

If A+B+C=pi, then prove that sinA+sinB+sinC+cos A+cosB+cosC+(tan²A+tan²B+tanC)+cosecA+cosec³B+cosecA=0

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If A+B+C= pi, then prove that sinA+sinB+sinC+cos A+cosB+cosC+(tan 2 A+tan 2 B+tanC)+cosecA+cosec 3 B+cosecA=0

If A+B+C=pi, then prove that sinA+sinB+sinC+cos A+cosB+cosC+(tan2A+tan2B+tanC)+cosecA+cosec3B+cosecA=0

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If A+B+C=pi, then prove that sinA+sinB+sinC+cos A+cosB+cosC+(tan²A+tan²B+tanC)+cosecA+cosec³B+cosecA=0