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2 and 4 number questions please Ycycucucicucucucxycucucucyvivyvyxtcivyxuvycjycyvyvibib

2 and 4 number questions please
Ycycucucicucucucxycucucucyvivyvyxtcivyxuvycjycyvyvibib

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Grade:11

1 Answers

Arun
25750 Points
5 years ago
 
Dear Rahul
 
Please ask only one Question in one thread.
 
4.)
 
2 tan^-1 (1/3) + tan^-1 (1/7)
 
At first you should convert 2tan-1 1/3 into tan-13/4 by applying the formula 2tan-1x = tan-12x/1-x2. Then you have tan-13/4 + tan-1 π/4 for which you can apply tan-1x + tan-1y and get the result as tan-11 = π/4.

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