Question

The least value of | a | for which tan q and cot q are the roots of the equation x² + ax + b = 0 is-

• A. 2
• B. 1
• C. ½
• D. 0

Answer 1

Answer: (A)

2

Answer 2

Since product of roots is one, b =1. Again since roots are real, a² – 4 ³ 0. Thus least value of |a| is 2.