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11) Find the quotient of 30(cos(-70°) + i sin(-70°)) and 6(cos 20° + i sin 20°). Write the result in rectangular form.

User Jacer Omri
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1 Answer

6 votes

Answer:

0 - 5i

Explanation:


\displaystyle (30(\cos(-70^\circ)+i\sin(-70^\circ)))/(6(\cos(20^\circ)+i\sin(20^\circ)))\\\\=5(\cos(-70^\circ-20^\circ)+i\sin(-70^\circ-20^\circ))\\\\=5(\cos(-90^\circ)+i\sin(-90^\circ))\\\\=5(0-i)\\\\=0-5i

User CAB
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