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
PolarNik [594]
2 years ago
10

2. Find the measure of angle A to the nearest degree.

Mathematics
1 answer:
pav-90 [236]2 years ago
7 0

Answer:

37°

Step-by-step explanation:

we're going to use cosine rule In calculating for the value of angle A

note that cosine rule can be used when two sides are given with an included angle . from the diagram above, the two sides given are side AB and side AC and the included angle is A

Hence cosine rule

a^2 = AB^2+AC^2 - 2AB×AC Cos A

3.2^2= 2.1^2+4.6^2-2×2.1×4.6COSA

10.24 =4.41+21.16- 19.32 COSA

10.24 = 25.57-19.32COSA

10.24-25.57= -19.32COSA

-15.33= -19.32COSA

dividing bothsides by - 19.32

COSA= -15.33/19.32

COA= 0.79347826

A = COS^-1 (0.79347826)

A= 37.488

A= 37°

<h2>hope this helps!!</h2>
You might be interested in
An animal shelter spends 5.50 per day to care for each bird and 8.50 per Day to care for each cat and a notice that the shelter
Deffense [45]

Answer:

19 birds

Step-by-step explanation:

First, I wrote my two equations:

5.5x +8.5y = 291.5

x + y = 41

Next, I got the variable y by itself in the second equation. Subtract x to get y = -x + 41. Then, I substituted what y equaled into the first equation. It should look like this: 5.5x + 8.5(-x+41) = 291.5. Distribute 8.5 to get 5.5x -8.5x + 348.5 = 291.5. Subtract 5.5x and 8.5x to get -3x. It should look like this: -3x + 348.5= 291.5. Subtract 348.5 from 291.5 to get -57. Now, you should have -3x = -57. Divide -3 from both sides, to get x = 19. So, there are 19 birds. If you want to go even further, 41-19= 22, which means there are 22 cats. Hope this helped!

6 0
3 years ago
What is the ricipricol of7/9
GuDViN [60]
The reciprocal would be 9/7 because a reciprocal is when you flip a fraction and put the denominator as the numerator and vice versa.
5 0
3 years ago
Read 2 more answers
10 POINTS FOR CORRECT ANSWER PLEASE HELP
vodomira [7]

Answer:

\sqrt{149}

Step-by-step explanation:

6 0
3 years ago
A right triangle with side legs of length 13 and 12 what is the value of x enter your answer in the box ​
Y_Kistochka [10]

Step-by-step explanation:

x =  \sqrt{ {12}^{2} +  {13}^{2}  }  \\  = \sqrt{ 144 +  169  }   \\  =  \sqrt{313}  \\  = 17.69 \\

4 0
3 years ago
Read 2 more answers
What’s equal to 2/32
defon

Answer:

1/16 4/64

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Can anyone help me on #7 and #8
    8·2 answers
  • A jewelry store marked up the price of its well-known necklace. The new price of the necklace is $250, which is 125% of the orig
    11·2 answers
  • What is the measure of angle B in the triangle?
    8·2 answers
  • Simplify 2(x + 4) + 3(x - 4
    11·1 answer
  • What will be the multipicative inverse of -1/4??
    7·1 answer
  • In a class of 30 students, 12 have a brother and 25 have a sister. There are 2 students who do not have any siblings. What is th
    11·1 answer
  • Refer to the figure below to complete the following item,
    9·1 answer
  • What is the solution of the equation below?<br> x² - 4= - 5
    7·1 answer
  • Lucía makes braided key chains out of cotton cord. For every 8 feet of cotton cord she has, she can make 3 braided key chains. P
    14·1 answer
  • PLEASE HELP WILL GIVE BRAINLIEST
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!