Question

What is the formula for multiplying complex numbers in trigonometric form?

Answer 1

here, cis is a less commonly used mathematical notation defined by cis(x) = cos(x) + i sin(x), where cos is the cosine function, i is the imaginary unit and sin is the sine.

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Answer 2

Answer:

cos(α+β)=cos(α)cos(β)−sin(α)sin(β) and sin(α+β)=cos(α)sin(β)+cos(β)sin(α).

Step-by-step explanation:

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