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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:

◖⚆‿⚆◗

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49x2 - 81 is an example of the difference of two
Shkiper50 [21]

Answer:

(4x + 3)(4x - 3) represents the factorization of a polynomial that was the difference of two squares as it is written as product of sum and difference of two numbers.

Step-by-step explanation:

Formulas are used to factorize the polynomials.

In the given question, we can see a difference of squares

the difference of squares can be factorized using the formula

a^2-b^2 = (a+b)(a-b)

Here a^2 and b^2 are squares and factorized as sum and difference of numbers.

So in the given options,

(4x + 3)(4x - 3) represents the factorization of a polynomial that was the difference of two squares as it is written as product of sum and difference of two numbers.

7 0
3 years ago
Solve this inequality and show the result on a number line.
MariettaO [177]

\\ \bull\tt\longmapsto 5(x-2)\geqslant 4(x-2)

\\ \bull\tt\longmapsto 5x-10\geqslant 4x-8

\\ \bull\tt\longmapsto 5x-4x\geqslant -8+10

\\ \bull\tt\longmapsto x\geqslant 2

  • x is either 2 or greater than 2.
8 0
2 years ago
Read 2 more answers
Amelia and Joey decided to shoot arrows at a simple target with a large outer ring and a smaller bull's-eye. Amelia went first a
Alona [7]

Answer:

outer ring worth 14 pts

bull's-eye worth 74.333333 pts

Step-by-step explanation:

let the worth point of landing an arrow on the outer ring be "x" and on bull's eye be "y"

For amelia

3x + 3y = 267

For joey

4x + 3y = 281

<em>s</em><em>u</em><em>b</em><em>t</em><em>r</em><em>a</em><em>c</em><em>t</em><em>i</em><em>n</em><em>g</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>f</em><em>i</em><em>r</em><em>s</em><em>t</em><em> </em><em>e</em><em>q</em><em>u</em><em>a</em><em>t</em><em>i</em><em>o</em><em>n</em><em> </em><em>f</em><em>r</em><em>o</em><em>m</em><em> </em><em>t</em><em>h</em><em>e</em><em> </em><em>s</em><em>e</em><em>c</em><em>o</em><em>n</em><em>d</em>

x = 14

3x + 3y = 267

42 + 3y = 267

3y = 223

y = 74.333

3 0
3 years ago
A 9.3 m<br> b. 13.3 m<br> C. 18 m<br> d. 21 m<br><br> Which answer is it
Novosadov [1.4K]

Answer:

I would say A

Step-by-step explanation:

hmu if you need more help

7 0
3 years ago
PLEASEEEE HELPPPPP!!!
Taya2010 [7]

(1, 3.5 ) and (3, 3.5 )

the endpoints of the midsegment are at the midpoints of DE and DF

using the midpoint formula with D(0, 7), E(2, 0), F(6, 0)

midpoint of DE = [\frac{1}{2}(0 + 2),\frac{1}{2}(7 + 0)] = (1, 3.5)

midpoint of DF = [\frac{1}{2}(0 + 6),\frac{1}{2}(7 + 0)] = (3, 3.5)


4 0
3 years ago
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