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
BigorU [14]
3 years ago
15

Cos 155 degrees equals

Mathematics
2 answers:
Kay [80]3 years ago
7 0

Answer:

-0.9063077

Step-by-step explanation:

The cos of 155 degrees is equals to -0.9063077

To obtain cos 155 degrees in radian multiply 155 by π/180

cos 155 degrees =  (155 /180) π  radian

Dividing 155 and 180 by its common factor 5 we will get (31/36)π

so cos 155 in terms of radian is equals (31/36)π

Since our angle is greater than 90 degrees and less than or equals to 180 degrees, it is located in quadrant II . In second quadrant the value of sin are positive only that is why cos 155 is  -0.9063077

It can also be solved by using identities of cosine

cos (∅) = sin(∅-90)

putting ∅ = 155, we get

= sin(155-90)

= sin(-65)

= -0.9063077

Margaret [11]3 years ago
5 0

type cos(155) into a calculator

cos(155)= -0.906307787...

You might be interested in
(7y - 2n) - (5y + 3a) =<br><br> Pls help
Sati [7]

Answer:

2y-2n-3a

Step-by-step explanation:

(7y-2n) - (5y+3a)

7y-2n-5y-3a

2y-2n-3a

4 0
3 years ago
Read 2 more answers
Is it <br> a.x = _<br> b. the solution is all real numbers <br> c. there is no solution
Zielflug [23.3K]

The solution to the given algebraic equation 1000(7x - 10) = 50(292 + 100x) is; x = 12.3

<h3>How to simplify algebraic equations?</h3>

We want to simplify the algebraic equation;

1000(7x - 10) = 50(292 + 100x)

The first step is to use distributive property of equality to expand the bracket to get;

7000x - 10000 = 14600 + 5000x

7000x - 5000x = 14600 + 10000

2000x = 24600

Use division property of equality to divide both sides by 2000 to get;

x = 24600/2000

x = 12.3

Thus, we can conclude that the solution to the given algebraic equation 1000(7x - 10) = 50(292 + 100x) is; x = 12.3

Read more about algebraic equations at; brainly.com/question/723406

#SPJ1

7 0
1 year ago
Please answer it in two minutes
seraphim [82]

Answer:

(7.5 , 5.5)

Step-by-step explanation:

The midpoint is halfway between the two end points:

Its x value is halfway between the two x values

Its y value is halfway between the two y values

To calculate it:

Add both "x" coordinates, divide by 2

Add both "y" coordinates, divide by 2

3 0
3 years ago
Your parents purchase a computer for $1,257.00 plus 6% sales tax. They decide to finance it through the store’s 0% program for 6
Katena32 [7]

Answer:

$111.59

Step-by-step explanation:

The total amount of the purchase was the cost of the computer plus the sales tax:

$1,257*1,06= $1,332.42

Now, to determine the interest that they will have to pay, you have to consider that the interest rate is 16,75% APR that is the annual percentage rate but as only 6 month have passed, the interest rate at this point that they have to pay is 8.375%:

$1,332.42*8.375%= $111.59

The interest that they will be charged is  $111.59

5 0
3 years ago
What is 9.39 to one decimal place
mafiozo [28]
9.4 because the number after the firs decimal point is higher than 5
5 0
3 years ago
Other questions:
  • How can you find a unit rate when given a rate?
    15·2 answers
  • HELPP
    7·1 answer
  • What number is 3% of 100?
    10·1 answer
  • Simplify using order of operations: 2(5 – 8) x 42.
    10·2 answers
  • Complete each number pattern
    12·1 answer
  • Multiplicative inverse of 21/49​
    15·1 answer
  • How to find rational numbers between any two numbers for example like finding six rational numbers between three and four please
    10·1 answer
  • ALL MY POINTS !!! (But 2 for 1)
    9·2 answers
  • Three fourths times 12 equals
    5·2 answers
  • Some please help!!!...................
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!