tanA is the integral solution of inequality 4x^2-16x+15cosB is the slope of bisectorof the first quadrant then the value of sin(A+B)*sin(A-B) is
tanA is the integral solution of
inequality 4x^2-16x+15
cosB is the slope of bisector
of the first quadrant then the
value of sin(A+B)*sin(A-B) is