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olganol [36]
3 years ago
5

Matrix question please help

Mathematics
1 answer:
lyudmila [28]3 years ago
7 0

Answer:

I don't know this answer please help hand

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If cos θ= 12 /13 and θ is located in the Quadrant I, find sin (2 θ ), cos(2 θ ), tan(2 θ )
Yakvenalex [24]

Answers: sin(2∅) = 120/169,  cos(2∅) = 119/169, tan(2∅) = 120/119

<h3>What are trigonometric functions?</h3>

Trigonometric functions are used to establish the relationship between the sides and the angles of a right angle triangle.

Analysis:

If cos∅ = adjacent/hypotenuse =  12/13,

Then, opposite of the right angled triangle = \sqrt{13^{2} - 12^{2}  } = 5

sin∅ = 5/13, cos∅ = 12/13, tan∅ = 5/12

sin(2∅) = 2sin∅cos∅ = 2(5/13)(12/13) = 120/169

cos(2∅) = cos^{2}∅ - sin^{2}∅ = (\frac{12}{13}) ^{2} - (\frac{5}{13} )^{2} = 144/169 - 25/169 = 119/169

tan(2∅) = sin(2∅) / cos(2∅)  = 120/169 ÷ 119/169 = 120/119

Learn more about trigonometric functions: brainly.com/question/24349828

#SPJ1

4 0
2 years ago
How many positive factors of 200 are divisible by 4?
Stella [2.4K]

Answer:

C. 6, D. 20, B. 18, B. 9

Step-by-step explanation:

#1. Factors of 200 are 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100 & 200, of which 6 are divisible by 4 (4, 8, 20, 40, 100 & 200)

#2. Prime factors of 35 are 7 & 5, twice the sum of these factors, k = 24. k-4 = 20

#3. Non-multiples of 4 nor 5 between 16 and 45 are 17, 18, 19, 21, 22, 23, 26, 27, 29, 31, 33, 34, 37, 38, 39, 41, 42 & 43...thus 18 non-multiples

#4. Even factors of 120 greater than 1 and less than 40 are 2, 4, 6, 8, 10, 12, 20, 24 & 30...thus there are 9 even factors

3 0
3 years ago
3^2+4^2-(4x2) asdfsdfs
Ilia_Sergeevich [38]

Answer:

17

Step-by-step explanation:

3^2+4^2-(4x2)

9+16-8

=17

4 0
3 years ago
The ratio of the number of people who own a smartphone to the number of people who a flip phone is 5:3. If 600 more people own a
Anuta_ua [19.1K]

Answer:

900

Step-by-step explanation:

The ratio of the number of people who own a smartphone to the number of people who a flip phone is 5:3.

Let the number of people who own a flip phone=x

If 600 more people own a smartphone than a flip phone, then the number of people who own a smartphone=x+600

To find x, we express the ratio and population as an equality.

5:3=x+600:x

Expressing the ratios as fractions would give:

\dfrac{5}{3}=\dfrac{x+600}{x}

Next, we cross multiply

5x=3(x+600)

Open the brackets by expansion.

5x=3x+(3 X 600)

5x=3x+1800

Subtract 3x from both sides.

5x-3x=3x-3x+1800

2x=1800

Divide both sides by 2

x=900.

Since x=900, the number of people who own a flip phone is 900.

7 0
3 years ago
Solve the equation below
Shtirlitz [24]

Answer: The solution should be n = 1.6

Step-by-step explanation:

Solve the equation:

-\frac{3}{8}n = -0.6

-Divide both sides by -\frac{3}{8}:

\frac{-\frac{3}{8}n }{-\frac{3}{8} } =\frac{-0.6}{-\frac{3}{8} }

n = \frac{8}{5} =1 \frac{3}{5} = 1.6

4 0
4 years ago
Read 2 more answers
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