127.[HSC] (i) (ii) The complex numbers z = cos 0 + i sin 0 and w = cos α + isinα, -π<0≤π and -π<α ≤π, satisfy 1+z+w = 0. By considering the real and imaginary parts of 1+z+w, or otherwise, show that 1,z and w from the vertices of an equilateral triangle in the Argand diagram. Hence, or otherwise, show that if the three non-zero complex numbers 2i, Z₁ and Z₂ satisfy |2i| = |Z₁| = |Z₂ AND 2i+Z₁ + Z2₂ = 0 then they form the vertices of an equilateral triangle in the Argand diagram
127.[HSC] (i) (ii) The complex numbers z = cos 0 + i sin 0 and w = cos α + isinα, -π<0≤π and -π<α ≤π, satisfy 1+z+w = 0. By considering the real and imaginary parts of 1+z+w, or otherwise, show that 1,z and w from the vertices of an equilateral triangle in the Argand diagram. Hence, or otherwise, show that if the three non-zero complex numbers 2i, Z₁ and Z₂ satisfy |2i| = |Z₁| = |Z₂ AND 2i+Z₁ + Z2₂ = 0 then they form the vertices of an equilateral triangle in the Argand diagram
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 71E
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