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Grade: 11

                        

1. If A + B = 45° then (1+ tanA)(1+ tanB)= 2. Let A and B be such that π

2 years ago

Answers : (1)

Arun
24742 Points
							
Dear Ayushi
 
tan (A + B) = tan 45 = tan A + tanB / 1 – tanA tanB
 
1 – tan A tanB = tan A + tanB
 
1 + 1 = 1 + tan A  + tan B + tanA tanB
 
2 = (1 + tanA) (1 + tanB)
 
Regards
Arun
2 years ago
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