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
WITCHER [35]
3 years ago
15

If cosA=4/5 and cosB=3/5 then find a,b,c

Mathematics
2 answers:
dexar [7]3 years ago
4 0
Ansnajsnandndnxnxbdsjsjsj
aliya0001 [1]3 years ago
3 0

Answer:

a = 3, b = 4, c = 5

Step-by-step explanation:

Assuming we're working with a right triangle, where c is the hypotenuse, then using the definition of the cosine being the adjacent side over the hypotenuse, then we know:

a = 3, because it is the side adjacent to B

b = 4, because it is the side adjacent to A

c = 5, because it is the denominator in bot fractions

This of course assumes that there is no additional ratio in place.  For example, if the lengths were instead 8, 6 and 10 respectively, then the cosines given would still be 4/5 and 3/5.  Truthfully these only tell relative sizes of the sides, and not their absolute sizes.

You might be interested in
What is the intersection of the sets A = {3, 4, 7, 8, 13} and B= {3, 7, 10, 13, 17}
Gelneren [198K]
This intersection means that u have to find the same number in both sets

the answer is 3 , 7 , 13

i am a mathematics teacher. if anything to ask please pm me
8 0
3 years ago
Read 2 more answers
Ella works in a music shop and earns $45 per day. She earns an extra $3 for each CD she sells. If Ella wants to earn at least $6
alex41 [277]
45+3n > $60 I hope this helps you out!!!
7 0
3 years ago
Read 2 more answers
Two customers went to a post office to buy postcards and large envelopes. Each postcard
astraxan [27]

The right answer is Option A.

Step-by-step explanation:

Let,

x be the postcards

y be the large envelops

According to given statement;

14x+5y=12   Eqn 1

10x+15y=24.80   Eqn 2

Multiplying Eqn 1 by 3;

3(14x+5y=12)\\42x+15y=36\ \ \ Eqn \ 3

Subtracting Eqn 2 from Eqn 3;

(42x+15y)-(10x+15y)=36-24.80\\42x+15y-10x-15y=11.20\\32x=11.20\\

Dividing both sides by 32

\frac{32x}{32}=\frac{11.20}{32}\\x=0.35

Putting x=0.35 in Eqn 1;

14(0.35)+5y=12\\4.90+5y=12\\5y=12-4.90\\5y=7.10

Dividing both sides by 5

\frac{5y}{5}=\frac{7.10}{5}\\y=1.42

Therefore, one large envelope costs $1.42

The right answer is Option A.

Keywords: linear equations, subtraction

Learn more about linear equations at:

  • brainly.com/question/9738996
  • brainly.com/question/10015690

#LearnwithBrainly

4 0
3 years ago
Calculate the value of 1/3 a = -5
sladkih [1.3K]

Answer:

- 15

Step-by-step explanation:

\frac{1}{3} a =  - 5 \\  \\ a =  - 5 \times 3 \\  \\ a =  - 15

6 0
2 years ago
Read 2 more answers
Question 7<br>(05.02 LC)<br>What is the measure of angle x? (1 point)​
attashe74 [19]

Answer:

43

Step-by-step explanation:

i took the unit 2 test review

nvm good luck...

~Sydney~

4 0
3 years ago
Other questions:
  • Posting a screenshot my loves
    14·1 answer
  • What number aa is 25% of 64?
    8·1 answer
  • Solve the inequality below for x. -3.2(2x-1) less than or equal to 17.6
    9·2 answers
  • What is the value of x? Round to the nearest tenth and show your work
    11·1 answer
  • What is the slope of the line in the graph?
    12·1 answer
  • 7. The store at your school wants to stock T-shirts that come in five sizes (small, medium, large, XL, XXL) and in two colors (o
    10·1 answer
  • What is the percent of decrease from 600,000 to 60,000? Write your answer using a percent sign (%).​
    9·2 answers
  • What number is one thousand less than one million?
    8·2 answers
  • If the following rectangular prism's width is doubled, what will happen to the volume?
    11·2 answers
  • Loss = 10% VAT=13% SP WITH VAT=25,425 now calculate CP
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!