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Molodets [167]
3 years ago
13

What is the exact value of cos 2π/3.

Mathematics
2 answers:
lora16 [44]3 years ago
4 0
The problem ask to calculate the exact value of the expression or trigonometric expression that is stated in you problem. Base on following some theories and rules about solving trigonometric expressions, the value of cos 2pi over 3 would be -1/2. I hope you are satisfied with my answer and feel free to ask for more 
nignag [31]3 years ago
3 0
Cos 2(phi)/3= cos 120°= -cos 60°= -1/2
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In five minutes 25 cars, 8 trucks, 12 vans and 2 motorcycles drove past the house. Which
zheka24 [161]

Answer:

12 vans : 8 trucks

Step-by-step explanation:

12/3=4

8/2=4

therefore this would be your answer.

25/3= 8.33   25/2=12.5

2/3- 0.66      2/2=1

8/3= 2.66  

12/2=6

Hope this helps

4 0
3 years ago
Help please ..someone
cupoosta [38]
B is the correct answer. When you see > which mean the line is go to the right side < is go to the left side.
Hope this helps!
7 0
3 years ago
Help with number 17 plz!
love history [14]

Answer:

  • 740 meters of fence
  • 22,000 square meters

Step-by-step explanation:

Two of the sides total 150 +220 = 370 meters. The other two sides are the same lengths, so the sum of lengths of the four sides is ...

  2·370 m = 740 m . . . . . length of fence needed

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The area of a parallelogram is the product of base and height.

  A = bh = (220 m)(100 m) = 22,000 m^2 . . . . area the fence encloses

5 0
3 years ago
If the discriminant is 22, then the roots of the quadratic equation are ________________.
Allisa [31]

Since the discriminant given has a value that is greater than zero, hence  the roots of the quadratic equation are real and distinct.

<h3>Discriminant of a quadratic equation</h3>

Quadratic equation is an equation that has a leading degree of 2. The discriminant is used to determine the nature of the equation

If D > 0 , the roots of the quadratic equation are real and distinct.

If D < 0 , the roots of the quadratic equation are complex

Since the discriminant given has a value that is greater than zero, hence  the roots of the quadratic equation are real and distinct.

Learn more on discriminant here: brainly.com/question/2507588

#SPJ1

4 0
2 years ago
The number of students taking classes at RSM Branch A is 1
juin [17]

Answer:

B = 1320

A= \dfrac54B

Step-by-step explanation:

Let A = number of students at Branch A

Let B = number of students at Branch B

If the number of students taking classes at Branch A is 1/4 more than Branch B, then:

      A=1 \dfrac14B

\implies A= \dfrac54B

If Branch A has 1,650 students, then substitute A = 1650 and solve for B:

\implies 1650= \dfrac54B

\implies 1650 \times 4= 5B

\implies 6600 =5B

\implies B=\dfrac{6600}{5}

\implies B=1320

6 0
2 years ago
Read 2 more answers
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