# complex numbers

posted by .

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

## Similar Questions

1. ### complex numbers!

-2-2i in polar form = 2.8 cis 2.35?? -3+4i polar form = 5 cis 2.2?
2. ### equation complex number

z^4 + 81 = 0 (solve) change it to polar, then take the root. z^4= 81@180 z= 3@180/4 + n90 where n=0, 1, 2, 3 check: z= 3@180/4 + 3*90=3@315 z^4=81@(4*315)=81@1260= 91@180=-81 you can check it at the other roots also. this is what i …
3. ### complex number ~

thanks BOB =) *HUGS* 115 cis 45* 3 solutions = 120* apart Are these correct?
4. ### ORGANIC CHEMISTRY

how will I be able to form the cis,trans and the cis,cis isomers of dibenzalacetone?
5. ### Math

Let cis Θ = cos Θ + i sin Θ. Let z1 = 3 cis 25 and let z2 = 4 cis 115 Find z2^6
6. ### Pre-Calc

Let cis Θ = cos Θ + i sin Θ. Let z1 = 3 cis 25 and let z2 = 4 cis 115 Find z2^6
7. ### Trigonometry

im stuck on these questions....... 6. Change -4√2 - 4√2 to trigonometric form A. 32 cis 135° B. 8 cis 225° C. 8 cis 45° D. 32 cis 45° 7. Simplify (2 cis 100°)7. A. 2 cis 700° B. 128 cis 280° C. 128 cis 340° D. 2 …
8. ### CIS 115

CIS 115 week 7 exercise: Determine output. I need help with this week's exercise...DeVry CIS 115 week 7...please help! Using the questions on page 2, determine the output for each question. If input data is provided, be sure to use …
9. ### Pre-cal

The number cis 75 + cis 83 + cis91 +...+ cis 147 is expressed in the form r cis(theta), where 0 <= theta < 360. Find theta in degrees. I need help.
10. ### Precal

The number cis 75 + cis 83 + cis91 +...+ cis 147 is expressed in the form r cis(theta), where 0 <= theta < 360. Find theta in degrees. @Damon I didn't understand your reply to my post. Could you please explain it to me?

More Similar Questions