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
Zigmanuir [339]
3 years ago
8

Find all solutions to the equation. cos x = - 1/2

Mathematics
1 answer:
madam [21]3 years ago
4 0

Answer:

x = 2\pi /3 + 2\pi n\\x= 4\pi /3 + 2\pi n

Step-by-step explanation:

Radian: x = 2\pi /3 + 2\pi n\\x= 4\pi /3 + 2\pi n

Degree:  x = 120 + 360n , x = 240 + 360n

You might be interested in
Surfave area of cylinder Round to the nearest tenth
Ainat [17]
Im pretty dure the area is 62.83
4 0
3 years ago
C = d where C is the circumference of a circle, is about 3.14, and d is the diameter.
Rzqust [24]

Answer:

Formula for Circumference of a Circle

Circumference is given by the formula C = πd where π = 3.14 and d is the diameter of the circle. Circumference is given by the formula C = 2πr where π = 3.14 and r is the radius of the circle.

Hope it's helpful to you

3 0
3 years ago
For a perfectly symmetrical distribution with a mean of 50, what is the value of the median?
Lelechka [254]

In a set of data, if the data is perfectly symmetrical then the mean is equal to the median. In this case, the median would be 50.

For example, consider the data set: {25, 50, 75}

The mean is going to be 50 because \frac{25+50+75}{3} = 50

The median is also 50 because that is the middle number when ordered numerically.

Hope this helped! Let me know if you have any more questions.

3 0
3 years ago
A park has a large circle painted in the middle of the playground area. The circle is divided into 4 equal sections, and each se
oee [108]
First you need to find the area of the whole circle.\pi  r^{2}
The radius is given as 10, so just insert 10 into the equation of the area of a circle equation. 
Area =  \pi  10^{2}    Area =  100 \pi
Putting \pi after the 100 because that is what is commonly done. 

Because the circle is then being split into 4 equal sections, we need to find 1/4 of the area of the whole circle to find the area of one of these sections. 

Since the area of the whole circle is 100 \pi then we just divide that by 4, 
leaving us with 25\pi and that is our final answer

3 0
3 years ago
It’s not 0.615 , or 0.75 or the one shown in the picture
Dafna1 [17]
2.40714

1) Let's evaluate that expression, given that a=4.9, b=-7, and c=-0.5

\begin{gathered} a^3\div b^2+c^3 \\ (4.9)^3\div(-7)^2+(-0.5)^3= \\ \frac{4.9^3}{\left(-7\right)^2+\left(-0.5\right)^3} \\  \\ \frac{4.9^3}{48.875} \\  \\ \frac{117.649}{48.875} \\  \\ 2.40714 \end{gathered}

Note that we have rewritten it as a fraction so that we can easily operate. Also, we have applied here the PEMDAS order of operations, prioritizing the exponents.

6 0
1 year ago
Other questions:
  • There was 2/3 of a pan of lasagna in the refrigerator. Bill and his friends ate 1/2 of what was left. How much of the pan did th
    12·1 answer
  • Hello my friends <br>can u help me out?
    6·2 answers
  • If Jake has six apples and John takes two how much is Jake gonna have
    9·2 answers
  • Si n es un número impar, ¿cuál de las siguientes opciones representa un número par? a) 2n +1 b) n (n + 2) c) n + (n-1) e) 2 (n +
    12·1 answer
  • at the city Museum, child admission is $5.10 an adult mission is $8.70. On Friday, 136 tickets were sold for total sales of $970
    9·1 answer
  • What is a rename in math
    5·1 answer
  • 5 for every $2.50 10 for every ?​
    7·1 answer
  • 1) Jada made 6 cups of blueberry jam and divided
    5·2 answers
  • Can you plz pick only 2 of these and make sure you have the steps to go with it cuz it’s due today
    5·2 answers
  • Rewrite p(x)=x³+3x²-4​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!