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
Damm [24]
3 years ago
5

What are the exact solutions?

Mathematics
1 answer:
Ksivusya [100]3 years ago
3 0

Answer:

x = 2* pi* n

Step-by-step explanation:

cos(2x) cos(x) + sin(2x) sin x =1

We know cos(s) cos(t) + sin(s) sin(t) = cos(s - t)

Using s =2x and t = x

cos (2x-x) =1

cos (x) =1

We know this occurs at 0, 2pi, 4 pi etc

x = 2* pi* n  where n is an integer

You might be interested in
9. Ben drinks tea at a relatively quick rate. He drinks 1/2 liter of tea every 2/3 of an
AURORKA [14]

Answer:

B

Step-by-step explanation:

8 0
3 years ago
Tess earned $52 for 4 hours of shoveling snow and $71.50 for 5.5 hours of shoveling snow. How long would she have to shovel snow
Deffense [45]
52/4 = 13
$13 = 1 hour.
$6.50 = halfhour

13 x 3 = $39
She would have to work for 3 hours to earn $39
6 0
3 years ago
Read 2 more answers
Solve by completing the square.<br> X^2-2x-15=0 (help)
gladu [14]

Step-by-step explanation:

x² - 2x - 15 = 0

x1 = 5

x2 = -3

8 0
3 years ago
Read 2 more answers
What is the probability of spinning green?
professor190 [17]
0.25 because there is 4 colours and obviously red is 0.75 percent and green and blue can’t be lower than 0.5 cuz that’s for yellow and there’s no 0%

(That makes no sense but it’s 0.25%)
3 0
3 years ago
(4x1000) + (2x100) + (3x1/10)
disa [49]
(4*1000) + (2*100) + (3*1/10) = <span>4200.3
</span>(4x1000) + (2x100) + (3x1/10) = <span>4200.3
</span>
Both are equal.
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the total length of your walk in the park? round to the nearest tenth of a meter
    12·1 answer
  • What is 25 dived by 9
    12·1 answer
  • Find the value of x so that f (x)=7
    11·1 answer
  • Whats the gcf of 44c^3,22c^3 and 11c^4
    11·2 answers
  • For cleaning the attic Jasmine was given $10.15. Now she has $23.43. How much money did she have before?
    6·2 answers
  • What is m∠PLM?<br><br> m∠PLM = __ °
    14·2 answers
  • A certain city divides naturally into ten district neighborhoods. How might a real estate appraiser select a sample of single-fa
    8·1 answer
  • Hannah says that 2.11 is a rational number. Gus says that 2.11 is a repeating decimal.
    10·2 answers
  • Gustavo tested 1000 calculators to see if any were defective. The company claimed that the probability of a defective calculator
    13·3 answers
  • 8/3​ c−2= 2/3 ​ c−12
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!