1.

If sinθ and cosθ is the solution of the quadratic equation \({x^2} + ax + b = 0\), then, which of the following option is correct?

A. a2 – 2b – 1 = 0
B. a2 + 2b – 1 = 0
C. a2 – 2b + 1 = 0
D. a2 –b – 1 = 0
Answer» B. a2 + 2b – 1 = 0


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