1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tatuchka [14]
3 years ago
14

Write -2+2i in polar form (ans in degrees)

Mathematics
1 answer:
gogolik [260]3 years ago
5 0

Answer:

2sqrt(2)cis(135)

2sqrt(2)e^(135i)

2sqrt(2)[cos(135)+isin(135)]

Step-by-step explanation:

The number is in form x+yi.

If x=y or x=-y, then we know we will need an angle measurement that is a multiple of 45 degrees; more accurately of the form (2k+1)45 degeees where k is an integer.

Since x is negative and y is positive, we are in the second quadrant. That means theta is 45(3) or 135 degrees.

At 135 degrees, we have the point

(-sqrt(2)/2,sqrt(2)/2). (Notice that x=-y).

-2+2i

Factor out 2:

2(-1+1i)

Multiply by 1 so that we can use the point mention. Namely, 2/sqrt(2) × sqrt(2)/2:

2 ×2/sqrt(2) (-sqrt(2)/2+sqrt(2)/2 i)

Simplify:

4/sqrt(2) (-sqrt(2)/2+sqrt(2)/2 i)

Continue to simplify:

4sqrt(2)/2 (-sqrt(2)/2+sqrt(2)/2 i)

Simplifying:

2sqrt(2)(-sqrt(2)/2+sqrt(2)/2 i)

Polar form is therefore

2sqrt(2)cis(135)

Or

2sqrt(2)e^(135i)

I don't know your exact desired polar form.

Could also be

2sqrt(2)[cos(135)+isin(135)].

You might be interested in
Calculate the area of triangle .
AnnZ [28]

Answer:

20 units

Step-by-step explanation:

The formula for the area:

A = bh × 1/2

B = 8 units

H = 5 units

8 × 5 = 40

40 × 1/2 = 20

8 0
3 years ago
3721nm equals how many m
e-lub [12.9K]

Answer:

0.000003721m

Scientific Notation: 3.72*10^-6

Step-by-step explanation:

1nm is 1*10^-6nm

Based on that we find the answer above.

8 0
3 years ago
Preform the indicated operation.<br> 4/11 ÷ 4/9​
BartSMP [9]

Answer:

0/8

Step-by-step explanation: i tried my best

4 0
3 years ago
Read 2 more answers
What is the value of x in the equation -2 =5x + 3
Mars2501 [29]
-2 = 5x +3
5x = 3 + 2
5x = 5
x = 1
3 0
3 years ago
Read 2 more answers
2. Jessica's grandparents gave her $2000 for college to put in a savings account until she starts
rodikova [14]

Answer:

<em>I </em>=2000(0.075)4= $600

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Divers looking for a sunken ship have defined the search area as a triangle with adjacent sides of length 2.75 miles and 1.32 mi
    12·1 answer
  • A drive way is 40 yards long. About how many meters lobg is it
    11·2 answers
  • X^2 y''+4xy'+2y=0 cauchy euler equation
    13·1 answer
  • Elect two ratios that are equivalent to 6 : 10
    15·1 answer
  • Find the common difference of the arithmetic sequence –8, -2, 4, ...
    14·1 answer
  • two mechanics worked on a car. the first mechanic worked for 5 hours, and the second mechanic worked for 15 hours. Together they
    9·1 answer
  • Which expression is equivalent to 14y−12?
    11·1 answer
  • Guys pls help me!!!!!!!!
    13·2 answers
  • The value of 3^4+5•5=
    14·1 answer
  • Sheree’s brother gave samuel his collection of stamps when she left for college. at that time, the value of the collection was $
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!