11th mathematics exercise questions with answers, Mathematics

Complex Numbers and Quadratic Equations – Class XI – Exercise 5.2

  1.Find the modulus and the argument of the complex number z = -1 – i √3 Solution: z = -1 - i√3 Let r cosθ = -1 and r sinθ = -√3 On squaring and adding, we get (r cosθ)2 + ( r sinθ)2 = (-1)2 + (-√3)2 r2(cos2θ + sin2θ) = 1 +… Continue reading Complex Numbers and Quadratic Equations – Class XI – Exercise 5.2