MCQ
Choose the correct answer.
If a + ib = c + id, then:
If a + ib = c + id, then:
- Aa2 + c2 = 0
- Bb2 + c2 = 0
- Cb2 + d2 = 0
- Da2 + b2 = c2 + d2
Solution:
Given that $\text{a}+\text{ib}=\text{c}+\text{id}$
$\Rightarrow|\text{a}+\text{ib}|=|\text{c}+\text{id}|$
$\Rightarrow\sqrt{\text{a}^2+\text{b}^2}=\sqrt{\text{c}^2+\text{d}^2}$
Squaring both sides, we get a2 + b2 = c2 + d2
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