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Roots of a quadratic equation x^(2)+5x+3=0 are 4cos^(2)alpha+a, and 4sin^(2)alpha+a. Another quadratic equation is given as x^(2)+px+q=0 where p, q in N and p, q in [1,10]. If roots of second quadratic equation are real then the probability that they are 4cos^(4)alpha + b and 4sin^(4)alpha + b is |
| Answer» Answer :A | |