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
marusya05 [52]
3 years ago
15

In Cos A = 0.4 Find The Value Of Cos 3 A.Thenku ☃️

exFormula1" title=" \: \: " alt=" \: \: " align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
s2008m [1.1K]3 years ago
3 0
Answer:
- 0.944

Step-by-step explanation:
We know that,
cos 3A = 4 cos³A - 3 cos A (formula)

So,
If cos A = 0.4,

cos 3A = 4 cos³A - 3 cos A
cos 3A = 4 × (0.4)³ - 3 × (0.4)
cos 3A = 4 × 0.064 - 1.2
cos 3A = - 0.944


Hope it helps ⚜




kirill [66]3 years ago
3 0

Answer:

<u>Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. The earliest roots of science can be traced to Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE.</u>

Step-by-step explanation:

◖⚆‿⚆◗

You might be interested in
5a + 8 = 62 True or False?
IgorC [24]

Answer: depending on what a equals

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
There are twenty trays of paint. Each tray has five colors. One of the colors is purple. What fraction of the colors is purple i
suter [353]
In one tray, we have 1/5. Since one is purple out of the 5 colors. 

So in 20 trays, we have:

(1/5) x 20 = 20/5 = 4
6 0
3 years ago
Read 2 more answers
Meg is recording all her expense (using negative numbers)and allowances.At the end of the month,she added her total allowances t
Ilya [14]

Answer:

<h2>Expenses= Allowance</h2>

Step-by-step explanation:

<em>The statements are not provided in the question, however, we can deduce from the information given.</em>

in the information provided, expenses are -ve(negative)

and allowances are +ve (positive)

if at the end of the month she balances are account and the total is zero

We can conclude that:

1. Her total expenses is equal to her allowance for the month

2. Meg spent all her allowances for the month

4 0
3 years ago
Brian made 5 free throws at basketball practice. Ethan scored 3 more than twice the number of free throws Brian made. What equat
Firdavs [7]

Answer:

t = 5(2) + 3

Step-by-step explanation:

You want the t on the outside because that is what you are trying to figure out.

You take the five, multiply it by 2, and then add 3 to what you get. Then thats the answer.

4 0
3 years ago
Read 2 more answers
What is the mean of the data set shown 68 70 72 74 76 78 80 82 84 86 88 90 92
Elden [556K]

The mean is the average. Add all the numbers together, then divide by the quantity of numbers in the data set.

1040 / 13 = 80

The mean is 80

4 0
3 years ago
Other questions:
  • Which equation is linear?
    6·2 answers
  • Mr flores opened an account with a deposit of 5,000​
    8·1 answer
  • Can someone give me the answers? thanks:))
    5·1 answer
  • Terry throws a six sided dice 36 times. How many times would you except him to get a number larger then 4
    9·1 answer
  • What value represents the horizontal translation from the graph of the parent function f(x) = x2 to the graph of the function
    7·2 answers
  • Maria drives 130 miles in 2 hours. If she keeps driving at the same speed without stopping, what is the total time it will take
    15·2 answers
  • In order to figure out how much money she needs for her trip to the store, Jessica has to solve this equation,
    10·1 answer
  • I’ll give you brainliest
    12·1 answer
  • PLS HELP ASAP THANKS ILL GIVE BRAINLKEST PLS THANKS PLS ASAP PLS PLS
    7·1 answer
  • Exponential Growth Functions
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!