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Grade: 11
        If x1,X2,X3,x4 are the roots of the equationx^4- x^3 sin 2beta+ x^2 cos 2beta- x cos beta-sin beta=0 then tan inverse x1+tan inverse x2+ tan inverse x3+ tan inverse x4=?
8 months ago

Answers : (1)

Arun
13880 Points
							
Dear student
Use 
tan^-1(a) + tan^-1(b) + tan^-1(c) + tan^-1 (d) 
In this formula all the value are asked which we can deduct from the equation.
Linke Like of roots and products of roots.
If you still found any difficulty please feel free to ask.
Regards
Arun (askIITians forum expert)
8 months ago
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