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if tan(a+b-c)/tan(a-b+c)=tan(a)/tan(b) then prove that sin(b-c)=0 or sin(2a)+sin(2b)+sin(2c)=0

if tan(a+b-c)/tan(a-b+c)=tan(a)/tan(b) then prove that sin(b-c)=0 or sin(2a)+sin(2b)+sin(2c)=0

Grade:12

1 Answers

Nirmal Singh.
askIITians Faculty 44 Points
7 years ago


Regards,
Nirmal Singh
Askiitians faculty

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