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Bond [772]
3 years ago
8

What is the cofunction of cos 2pi/ 9

Mathematics
1 answer:
fiasKO [112]3 years ago
3 0

The cofunction of cos is sin(90-x)

90 degrees is equal to PI/2

The cofunction becomes sin(PI/2 - 2PI/9)

Rewrite both fractions to have a common denominator:

PI/2 = 9PI/18

2PI/9 = 4PI/18

Now you have sin(9PI/18 - 4PI/18)

Simplify:

Sin(5PI/18)

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*15 points* Gabe buys a pack of 25 colored pencils for $25.50. How much does one pencil cost?
Anettt [7]

Answer:

$1.02

Step-by-step explanation:

25.50 \div 25 = 1.02

6 0
3 years ago
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HELP DUE IN 2 HOURSSS
tekilochka [14]

Answer:

1.05 miles per hour

Step-by-step explanation:

m = y2 - y1/ x2 - x1 (It doesn't matter which you choose to be y2 and y1, just make it consistent)

m = 4.2 - 2.1/ 4 - 2

m = 2.1 / 2

m = 1.05

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Jocelyn is pregnant and needs to eat at least 500 more calories a day than usual. when buying groceries one day with a
stiks02 [169]
90b + 150g > 500

0.35b + 2.50g < 15.00

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3 0
3 years ago
One month, Miko bought two books at a used book store for $2. Over the next few months, she bought four books for a total of $5,
bagirrra123 [75]

$190 is the cost proportional to the number of books purchased'

What is the short answer to cost?

  • A company's cost is the amount of money it had to spend to create its goods or services. It is calculated as the sum that the business spends to create a specific number of a product.
  • Simply put, it is the cash that a business spends on things like labor, services, raw materials, and other costs.

Mike purchased total books = 2 × $2 + 4 × $5 + 6 × $7 + 8 × $10

                                              = 4 + 20 + 30 + 56 + 80

                                               = $190

Learn more about cost

brainly.com/question/13542740

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4 0
2 years ago
How much work is done by a man who uses a force of 7 Newtons to push a box 3 meters across the room?
ElenaW [278]

The formula to calculate work done is -

Work done ( in joule, J) = Force (in Newton) X Distance (in meters)

So, we will use the formula to calculate work done,

Here, force is given as = 7 newtons

Distance is given as = 3 meters

So, work done will be -

Work done ( in joule, J) = 7 Newtons X 3 Meters

<u>Work done ( in joule, J) = 21 J (in joule)</u>


7 0
4 years ago
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