cis x means cos x + i sin x
plugging in...
4 ( cos 60 + i sin 60)
You know cos 60 and sin 60 right?
...
4 (1/2 + i √3/2)
distribute...
2 + 2√3 i
Emily M.
asked 03/31/20Change to rectangular form: 4cis60. Find the exact answer.
cis x means cos x + i sin x
plugging in...
4 ( cos 60 + i sin 60)
You know cos 60 and sin 60 right?
...
4 (1/2 + i √3/2)
distribute...
2 + 2√3 i
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