WBJEE 2012 Math Solved Paper

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Question : 19 of 80
 
Marks: +1, -0
The line joining A(b cos α, b sin α) and β(a cos β,a sin β ) where a ≠ b is produced to the point M(x, y) so that AM : MB = b : a . Then, xcos
α+β
2
+ysin
α+β
2
is equal to
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