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
NikAS [45]
3 years ago
13

What is the rule for a counterclockwise rotation about the origin of 210°

Mathematics
1 answer:
Phoenix [80]3 years ago
8 0

Answer:

  (x, y) ⇒ (-x√3/2 +y/2, -x/2 -y√3/2)

Step-by-step explanation:

The rule for CCW rotation through an angle α is ...

  (x, y) ⇒ (x·cos(α) -y·sin(α), x·sin(α) +y·cos(α))

So, for α = 210°, the rule becomes ...

  (x, y) ⇒ (-x√3/2 +y/2, -x/2 -y√3/2)

You might be interested in
What is 1000 x 10 -5000 +23 - 93 giving brainist thanks!!!
Lyrx [107]

Answer:

Step-by-step explanation:

We must use PEMDAS for this answer.

First, we must multiply 1000 and 10.

10,000-5000+23-93

Next, we must subtract 10,000 and 5,000

5000+23-93

Add 5000 and 23

5023-93

For our final step, subtract and you get your answer.

4,930

3 0
3 years ago
Three friends were working on a project. Cindy completed 4/8 of the project. Kim completed 3/8 of the project. Sandy completed 1
Maslowich
4/8 + 3/8 + 1/8 = 8/8 = 1

They completed the whole project.
6 0
3 years ago
Question 1 options:
Whitepunk [10]

Answer:

\frac{-1+/-3\sqrt{2} }{2}  where a = 1, b = 1,and c=-4

Step-by-step explanation:

To solve, use the quadratic formula. Using the quadratic formula, requires the standard form ax^2+bx+c Here a = 1, b = 1, and c = -4.

The quadratic formula is x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}.

Substitute and you'll have:

x=\frac{-b+/-\sqrt{b^2-4ac} }{2a} =\frac{-1+/-\sqrt{1^2-4(1)(-4)} }{2(1)}=\frac{-1+/-\sqrt{1+17} }{2)}

\frac{-1+/-\sqrt{18} }{2}=\frac{-1+/-3\sqrt{2} }{2}

6 0
3 years ago
Equation of line k ?
Alex Ar [27]
It is B    because that the right answer
5 0
3 years ago
The order of the ______________ in the congruence statement for two congruent triangles tells you the correspondence.
goblinko [34]
Letters

If ABC is congruent to DEF
Then angle A = angle D
angle B = angle E
angle C = angle F
Sides:
AB = DE
BC = EF
AC = DF

4 0
3 years ago
Read 2 more answers
Other questions:
  • tim earns $150 a week plus $15.50 for each desk he assembles. write an inequality to represent how many desks he needs to assemb
    14·1 answer
  • PLEASE HELP! SUPER EASY!!! Find the distance from point (2,6) to point (8,3) to the nearest tenth of a unit. ( using Pythagream
    13·1 answer
  • Write 0.0003532 in scientific notation. A. 3.532 × 105 B. 3.532 × 104 C. 3.532 × 10−4 D. 3.532 × 10−5
    12·1 answer
  • Deon rented a truck for one day. There was a base fee of $20.95 , and there was an additional charge of 90 cents for each mile d
    5·1 answer
  • Calcula la altura de la que cae un balón si tarda en llegar al suelo 1.16s y la aceleración de la gravedad es de 9.81 m/s2
    7·1 answer
  • Taylor is competing in a 30 kilometers race. She has already run 12.35 kilometers through a park and swam 3.75 kilometers. She w
    15·1 answer
  • Find the point of intersection of the lines 7x-2y=25 and 5y=3x-19, then find the value of 5x-y^2.
    15·1 answer
  • An amount of money that is deposited or borrowed that earns or is charged interest is called a what?
    15·1 answer
  • 10^7+9+1^3 helppp meeee
    6·2 answers
  • Does the dilated image represent an enlargement, reduction, or neither?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!