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If (a,b) be the orthocentre of the trian...

If `(a,b)` be the orthocentre of the triangle whose vertices are `(1,2),(2,3)` and `(3,1)` ,and `I_(1)=int_(a)^(b)x sin(4x-x^(2))dx,I_(2)=int_(a)^(b)sin(4x-x^(2))dx` ,then `36(I_(1))/(I_(2))` is equal to:

A

66

B

88

C

80

D

72

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