# complex numbers

115 cis 45*
3 solutions = 120* apart

Are these correct?
115 cis 45*
115 cis 45 + 120 = 165*
115 cis (45 + 120 + 120) = 285*??

WHat is cis?

cos + isin

1. 👍 0
2. 👎 0
3. 👁 168

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thanks BOB =) *HUGS* 115 cis 45* 3 solutions = 120* apart Are these correct? 115 cis 45* 115 cis 45 + 120 = 165* or is it (-75*) 115 cis (45 + 120 + 120) = 285*?? or (-195*)?? It's really Matthew!I found out what it is but I will

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