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I think this will have sinA=cos Now equation sin/cos= A/A so Tan = 1 please tell me is it right.and explain also please

I think this will have sinA=cos 
  Now equation sin/cos= A/A so 
                       Tan = 1 please tell me is it right.and explain also please 

Question Image
Grade:12th pass

1 Answers

Arun
25763 Points
2 years ago
Dear student
 
As
sin 2A = sinA
 
2 sinA cosA = sinA
 
cosA = ½
 
hence A = 60o
 
Hope it helps
 
Regards
Arun (askIITians forum expert)
 

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