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Grade: 11 

                        
If A,B,C,D =2Pi then prove that tanA +tanB+tanC +tanD = tanAtanBtanCtanD (cotA+cotB+cot+cotB)
2 years ago

Answers : (1)

Deepak Kumar Shringi
askIITians Faculty
4403 Points 
							please re-check the question i guess it should be
A+B+C+D= 2pie
2 years ago
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