Complex numbers - Exponential form?

2020-10-19 1:45 am
Please explain step by step how and why


5e^(-i(t-15°)) + 5e^(i(t-15°))


becomes


10cos(t-15°)

回答 (1)

2020-10-19 2:23 am
✔ 最佳答案
The answer is as follows:


收錄日期: 2021-04-23 23:06:56
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