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Anton [14]
3 years ago
14

Hi why we use sin in vector product why not we use cosine?

Mathematics
1 answer:
ELEN [110]3 years ago
3 0
We use sin in vector product and not using cosine because
Sin function is natural for physical process, 
The value arise from zero to max

Hope this helps
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Find the value of x. Round the length to nearest tenth.
Lady_Fox [76]

From the law of sines, we have

l = h\sin(\theta) = h\cos(\alpha)

where l is the leg we're interested in, h is the hypothenuse, \theta is the angle opposite to l, and \alpha is the angle between l and h.

So, in the first case, we can use

x = 15\sin(35) \approx 8.6

And in the second excercise, we use

x = 11\cos(44) \approx 7.6

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3 years ago
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John, Maya, and Zara have been picked to compete in the national track and field championships on behalf of their school. They c
bagirrra123 [75]

80.2

Step-by-step explanation:

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3 years ago
If you buy a radio that cost $860 and sales tax is 6%. Find the total price you would pay.
pashok25 [27]

Answer: $911.60

Step-by-step explanation: 860 time 6% is 911.60

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3 years ago
Find the perimeter of a quadrilateral with vertices at C (−2, 1), D (2, 4), E (5, 0), and F (1, −3).
antoniya [11.8K]

The perimeter of the quadrilateral with vertices at C (−2, 1), D (2, 4), E (5, 0), and F (1, −3) is 20units.

Option C) is the correct answer.

<h3>What a quadrilateral?</h3>

A quadrilateral is simply a polygon with four sides, four angles, and four vertices.

To get the perimeter, we simply add the values of the four side.

Given that;

The vertices are at C (−2, 1), D (2, 4), E (5, 0), and F (1, −3).

To get the dimension between the given coordinates, we use;

 d = √((x2 -x1)² +(y2 - y1)²)

For length CD, DE, EF and FC

CD = √((2 - (-2))² + (4 - 1)²) = √( 16+9) = √25 = 5

DE = √((5 - 2)² + (0 - 4)²) = √( 9+16) = √25 = 5

EF = √((1 - 5)² + (-3 - 0)²) = √( 16+9) = √25 = 5

FC = √((-2 - 1)² + ( 1 - (-3))²) = √( 9+16) = √25 = 5

Perimeter of the quadrilateral = CD + DE + EF + FC

Perimeter of the quadrilateral = 5 + 5 + 5 + 5

Perimeter of the quadrilateral = 20units

Therefore, the perimeter of the quadrilateral with vertices at C (−2, 1), D (2, 4), E (5, 0), and F (1, −3) is 20units.

Option C) is the correct answer.

Learn more about area of rectangle here: brainly.com/question/27612962

#SPJ1

6 0
2 years ago
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Solve the following:<br> a) 4x-1 / 2= x+7<br> b)<br> 3x + 2 = 2x + 13 /3
11Alexandr11 [23.1K]

Answer:

a) 2.5

b)2.33

Step-by-step explanation:

a)

4x-\frac{1}{2}= x+7

Bring the numerals to the right hand side and the x terms to the left hand side

4x-x=7+\frac{1}{2}

Simplify

3x=\frac{15}{2}

Divide 3 on both sides, to get x

x=\frac{5}{2} =2.5

b)

3x+2=2x+\frac{13}{3}

Bring the numerals to the right hand side and the x terms to the left hand side

3x-2x=\frac{13}{3}-2

Simplify

x=\frac{7}{3} =2.33

5 0
3 years ago
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