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TanA+tan4A+tan7A=tanAtna4Atna7A. Then find A degree

TanA+tan4A+tan7A=tanAtna4Atna7A.    Then find A degree

Grade:11

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
Above relation is true if sum of all angles is 180°
 
Hence
 
A + 4A + 7A = 180
 
A = 15°
 
Regards
Arun

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