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Gemiola [76]
3 years ago
7

When do you use trigonometric functions

Mathematics
1 answer:
Zolol [24]3 years ago
6 0

Answer:

Trigonometric ratios are used to find unknown angles/sides of a right angle triangle

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Seven men and seven women line up at a checkout counter in a store. In how many ways can they line up if the first person in lin
luda_lava [24]

Answer:  The required number of ways is 25401600.

Step-by-step explanation:  Given that seven men and seven women line up at a checkout counter in a store.

We are to find the number of ways in which they can line up, if the first person in line is a man , and the people in line alternate man, woman, man, woman and so on.

Since the first person is a man, so

for first position, we have 7 options.

There are alternate man and women in the line, so the second person must be a women.

That is, we have 7 options for the second position.

Similarly, for 3rd and 4th positions, we have 6 options for each, and so on.

Therefore, the number of ways in which the 14 persons can line up is

n=7\times7\times6\times6\times5\times5\times4\times4\times3\times3\times2\times2\times1\times1=7!\times7!=5040\times5040=25401600.

Thus, the required number of ways is 25401600.

3 0
2 years ago
3x^2+x-5=0 to 2 decimal place<br> 3x^3+2x-4=0 to 2 decimal place
Schach [20]

Answer:

1. 3/5

2. 1.219841

3. 2 - f(2)/7

4. -1.9682

5. 1.502446

Step-by-step explanation:

If we call

then the second approximation to the root of the equation f(x)=0 would be

hence

2.

Here we have

Let's start with  

then

Since the first 6 decimals of  and  are equal, the desired approximation is 1.219841

3.

If the line y = 4x − 1 is tangent to the curve y = f(x) when x = 2, then f'(2) = 4*2 - 1 = 7, so

4.

Here

5.

We want to find all the values x such that

or what is the same, the x such that

so, let f(x) be

and let's use Newton's method to find the roots of f(x).

Since

f is strictly increasing, and since

f(1) = e+3-9 = e - 6 < 0

and

f has only one root in [1,2]

By using Newton's iterations starting with  

Since  then

x=1.50244564 is the desired root.

The answers as a comma-separated list would be

1,  1.573899431,  1.503982961,  1.502446348, 1.50244564

The answer rounded to six decimal places would be

1.502446

8 0
3 years ago
Which number is GREATEST?<br> 0.27<br> 0.046<br> 0.297<br> 0 0.3
VLD [36.1K]

Answer:

0.3

Step-by-step explanation:

Go left to right for each digit, which one is greater. They all have a decimal so for right now we can’t eliminate any. Next digit we two 2s a 0 and a 3. Whch number is greater? The three! So the greatest number is 0.3.

7 0
3 years ago
20.5 meters to 35.5 meters
Ghella [55]
The answer to this question <span> 67.7465%</span>
4 0
3 years ago
$4 is what percent of $8
Fudgin [204]

Answer:

50%

Step-by-step explanation:

Is means equals and of means multiply

4 = P * 8

Divide each side by 8

4/8 = P 8/8

.5 = P

Multiply each side by 100 to change from decimal form to percent form

50% = P

4 is 50% of 8

6 0
3 years ago
Read 2 more answers
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