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]
2 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]2 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]2 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
HELP ME!!!!! Which choices are equivalent to the fraction below? CHECK ALL THAT APPLY.
slavikrds [6]

Answer:

A and E

Step-by-step explanation:

9^3 / 9^3

Same number on top and bottom so 1 is an answer

look at the exponents, when dividing with exponents, you just subtract them, so it could also be 9^0, which is also 1

3 0
3 years ago
Read 2 more answers
Is 0.762050555854466 rational or irrational and why
Rainbow [258]

Answer:

No

Step-by-step explanation:

This is because it is a forever ongoing number. Here is an examples 7, pie, 5, and 2

tell me if this helped pls mark brainliest

9 0
3 years ago
I need help asap with this
tatyana61 [14]

Answer:

51°

Step-by-step explanation:

Given

<QPR = 39°

<PQR = 90° ( inscribed angle in semi circle)

Now

<QPR + <PQR + <PRQ = 180° { being sum of angles of triangle)

39° + 90° + <PRQ = 180°

<PRQ = 180° - 39° - 90°

<PRQ = 51°

Hope it will help :)

5 0
3 years ago
Solve the following equation. Please show all work x/x-2+x-1/x+1=-1
Ainat [17]
Im not sure but i think its 1.22474487 

sorry just in case its wrong :(
4 0
3 years ago
Describe how dust particles from a desert can end up in a tropical jungle.
MrMuchimi

Answer:

Step-by-step explanation:

Tiny particles such as dust, ice, salt, and other types of particle materials provide surfaces perfect for water vapor to condense. Then, wind carries these small molecules and particles thousands of kilometers.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Find the sum of the sequence. 42+43+44+45+...+107
    14·1 answer
  • Pi/24 is the solution for 4cos2 (4x) - 3 = 0<br><br> True or false
    6·2 answers
  • What conclusion can be based on the given statement?
    8·2 answers
  • for sale, a store decrease it's price on all items by 25%. An item that cost $ 120 before the sale now costs $120 - 0.25 ( $ 120
    9·1 answer
  • Janeverything spent $42 for shoes this was $14 less than twice what she spent for a blouse how much was the blouse
    5·1 answer
  • One side of a rectangle is 4 inches longer than the other side. The area of the rectangle is 21 square inches. Find the lengths
    5·1 answer
  • Ali has 3 different coins (10p, 50p and £1).
    11·2 answers
  • Square root of 32 x square root of 1 over 18
    12·1 answer
  • The number of loaves of bread purchased and the total cost of the bread in dollars can be modeled by the equation c = 3. 5b. Whi
    14·1 answer
  • What are the solutions to this linear system?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!