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OpenStudy (sarahc):
Express the complex number in trigonometric form. -5i 5(cos 270° + i sin 270°) 5(cos 180° + i sin 180°) 5(cos 90° + i sin 90°) 5(cos 0° + i sin 0°)
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OpenStudy (anonymous):
the first one
OpenStudy (jhannybean):
Don't give answers, D:<
OpenStudy (sarahc):
Evaluate the expression. r = <5, 9, -4>, v = <3, 3, -8>, w = <9, -6, -1> v ⋅ w <-15, -27, -32> 0 17 <27, -18, 8> B or c?
OpenStudy (anonymous):
what the angle is 270
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