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
alina1380 [7]
3 years ago
13

What is cosA ? Enter your answer, as a simplified fraction, in the box.

Mathematics
1 answer:
krok68 [10]3 years ago
8 0

Answer:

5/13

Step-by-step explanation:

From the mnemoic SOH CAH TOA, we know that ...

... Cos = Adjacent/Hypotenuse

In this triangle, that means ...

... cos(A) = AC/AB

We are given the value of AC, but we need to find the value of AB. We can do that using the Pythagorean theorem:

... AB² + AC² +BC²

... AB² = 15² +36² = 1521 = 39²

... AB = 39

Then ...

... cos(A) = 15/39 = (5·3)/(13·3)

... cos(A) = 5/13

You might be interested in
BC =<br> Round your answer to the nearest hundredth.<br> B<br> 50°<br> 7
Brrunno [24]

Answer:

BC = 5.87

Step-by-step explanation:

Reference angle = 50°

Side Opposite to reference angle = 7

Adjacent side = BC = ?

Apply trigonometric function, TOA, thus:

Tan 50 = Opp/Adj

Tan 50 = 7/BC

BC × Tan 50 = 7

BC = 7/Tan 50

BC = 5.87369742 ≈ 5.87 (nearest hundredth)

4 0
3 years ago
A bee flies at 10 feet per second directly to a flower bed from its hive. The bee stays at the flower bed for 13 minutes, and th
rosijanka [135]

Answer:

barbilat hahaha

baho bilat

7 0
2 years ago
Please can someone help me answer these questions? Would be really grateful if it was done by the 12th of January. Thank you :)
FrozenT [24]
1. 4g= 37-5
 ⇒ 4g= 32
⇒ g= 32/4
⇒ g= 8

2. c= 5*6
⇒ c= 30

3. f+4= 3*5
⇒f+4= 15
⇒ f= 15-4
⇒ f= 11.

4. b+6= 30/5
⇒ b+6= 6
⇒ b= 6-6
⇒ b=0

5. a-5= 60/5
⇒ a-5= 12
⇒ a= 12+5
⇒ a= 17

6. e+2= 45/5
⇒ e+2= 9
⇒ e= 9-2
⇒ e= 7

7. d-5= 12/3
⇒ d-5= 4
⇒ d= 4+5
⇒ d= 9

8. m-4= 16/4
⇒ m-4= 4
⇒ m= 4+4
⇒ m= 8

9. q+6= 30/5
⇒ q+6= 6
⇒ q= 6-6
⇒ q= 0

10. h/3= 3+5
⇒ h/3= 8
⇒ h= 8*3
⇒ h= 24

11. 3c= 3-5
⇒ 3c= -2
⇒ c= -2/3

12. x/3= 6-7
⇒ x/3= -1
⇒ x= -1*3
⇒ x= -3

13. 6p= 2+1
⇒ 6p= 3
⇒ p= 3/6
⇒ p= 1/2

14. 2d-7= 27/3
⇒ 2d-7= 9
⇒ 2d= 9+7
⇒ 2d= 16
⇒ d= 16/2
⇒ d=8

15. b-3= 5/2
⇒ b-3= 2.5
⇒ b= 2.5+3
⇒ b= 5.5

16. y-1= 1/3
⇒ y= 1/3+1
⇒ y= 1 1/3

17. 5v= 9-3
⇒ 5v= 6
⇒ v= 6/5
⇒ v= 1.2

18. n-3 = 3*6
⇒ n-3= 18
⇒ n= 18+3
⇒ n= 21

19. t+10= 1*4
⇒ t+10= 4
⇒ t= 4-10
⇒ t= -6

20. 3c+4= 3*5
⇒ 3c+4= 15
⇒ 3c= 15-4
⇒ 3c= 11
⇒ c= 11/3
⇒ c= 3 2/3

Hope this helps~
6 0
3 years ago
Read 2 more answers
Please help, I have no idea what it's asking :')
Andre45 [30]

the answer is step by step CFE

3 0
2 years ago
The cost for 16 ounces of cheese is $3.20. What is the cost for 20 ounces of cheese?
9966 [12]

Answer:

It costs $4 dollars for 20 ounces of cheese.

Step-by-step explanation:

First we find out how many dollars for 1 ounce of cheese.

3.20 ÷ 16 = 0.2

Next we multiply 0.2 by 20.

20 * 0.2 = 4

So, the answer is 4 dollars.

Hope this helps! :)

8 0
3 years ago
Other questions:
  • Please help!!! Sketch one cycle of the graph of the sine function:<br> y=2sinπθ
    15·1 answer
  • Which descriptions about simple interest and yearly compounded interest are true? Check all that apply. Only compound interest h
    5·2 answers
  • 5 3/5 as an inmpoer number
    9·1 answer
  • Pls help me solve this!
    6·1 answer
  • PLS HELP ME I HAVE A FEW MINS TO ANSWER I'LL DO WHAT EVER YOU WANT JUST HELP ME
    13·1 answer
  • Select the correct answer.
    12·1 answer
  • What is the domain of the graph
    13·2 answers
  • Round 78300 nearest hundred
    5·1 answer
  • Milan tutors history. For each hour that he tutors, he earns 50 dollars. His earnings, (in dollars), after tutoring for hours is
    13·1 answer
  • Someone please tell if this is right!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!