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1/(cos A cos B) + tan A tan B = tan C Prove that cos 2C

1/(cos A cos B) + tan A tan B = tan C
 
Prove that cos 2C

Grade:12th pass

1 Answers

Nishant Vora IIT Patna
askIITians Faculty 2467 Points
5 years ago
Dear student,

Please complete the question.

Thanks

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