IB MAI HL Number and Algebra Topic 1.4 Complex Numbers (id: ff9a64b24)

本题目来源于试卷: IB MAI HL Number and Algebra Topic 1.4 Complex Numbers，类别为 IB数学

[填空题]
A circle is drawn on an ci13gfi . zv gl8ad,ag30njh15lkl p6Argand diag u:) nk-v(ktqbram as shown below. The tangent to the circle from the point B(0,9) meets the circle kvku:t-( nqb )at the point A as shown. Let w= OA$^{→}$.

1.Show that ∣w∣=3$\sqrt{3}$.

2.Find arg w.w=$\frac{\pi}{x}$,x=  .

3.Hence write w in the form a+bi where a,b∈R.
w=$\frac{3\sqrt{3}}{x}+\frac{y}{2}i$,x=  , y=  .

参考答案:
空格1: 3  空格2: 2  空格3: 9 


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