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Prove that sin(a+b+c)=cosacosbcosc(tana+tanb+tanc-tanatanbtanc)and deduce that if a, b, c are the angle of triangle, then cotacotb+cotbcotc+cotccota=1

Prove that sin(a+b+c)=cosacosbcosc(tana+tanb+tanc-tanatanbtanc)and deduce that if a, b, c are the angle of triangle, then cotacotb+cotbcotc+cotccota=1

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Grade:12

1 Answers

Harshit Singh
askIITians Faculty 5964 Points
one year ago
Dear Student

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kindly provide complete and clear question
Thanks

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