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Prove that sin π/7+ sin 9π/7+ sin 2π/7+sin 8π/7=0If tan teta+tan (60- teta)+tan(120-teta)=3Prove that 3tan teta - tan square teta divided by 1-3tan square teta=1

Prove that sin π/7+ sin 9π/7+ sin 2π/7+sin 8π/7=0If tan teta+tan (60- teta)+tan(120-teta)=3Prove that 3tan teta - tan square teta divided by 1-3tan square teta=1

Grade:11

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4407 Points
4 years ago
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