3) What is the value of (tan 75°- sec75)4) What is the nature of root – InterviewSolution

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3) What is the value of (tan 75°- sec75)4) What is the nature of roots of the quadratic equation 5x-12x-4-0.uriouot 153

Answer»

tan^x-sec^x=-1hencetan^2(75)-sec^2(75)=-1

Nature of rootsD=b^2-4acD=144-4*4*5=144-80=64As discriminant is greater than 0 hence roots are distinct and real

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