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3 years ago

Cot^2x•sec^2x convert each of these into sine and cosine and simplify

Mathematics

1 answer:

Nana76 [90]3 years ago

8 0

$\cot(x)=\frac{\cos x}{\sin x}$

$\sec x=\frac1{\cos x}$

$\therefore \cot^2x\cdot\sec^2x= \frac{\cos^2x}{\sin^2x}\frac{1}{\cos^2x}=\frac{1}{\sin^2x}$

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Answer:

I remember doing this but I forget how I´m sorry

Step-by-step explanation:

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3 years ago

How is solving for a variable similar to solving an equation? How is it different

storchak [24]

When we say "solve for the variable", we mean to solve the equation because the solution of the equation is finding the unknown variable.

So, the similarity between "solving for a "variable" to "solving an equation" is that both actions imply looking at the value of that variable.

<h2>Similarity: both actions imply looking at the value of that variable.</h2>

On the other hand, a slight difference would be in the case of having several variables in the equation. In this case, both actions could represent slight differences, because if we have three different variables and we say "solve for <em>y</em>", that means we must isolate that variable, and the result is just an expression. But, if we say "solve the equation"

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1 year ago

In 2017, there were about 21 million teenagers (aged 13-17) in the United States. They each

vivado [14]

The Number of text messages sent in a month is 1.68 × $10^{(-8)}$

Step-by-step explanation:

Step 1 :

Total number of teenagers in United States = 21 million

Average text messages sent per month = 800

We need to find the number of text messages sent each month

Step 2 :

The number of text messages in a month can be computed by taking the product of the total number of teenagers and average messages sent per month

Therefore

Number of text messages that is sent in a month = 21 million × 800

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Step 3 :

Answer :

The Number of text messages that is sent in a month is 1.68 × $10^{(-8)}$

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3 years ago

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<h3>What is a linear function?</h3>

The slope-intercept representation of a linear function is given by the rule presented as follows:

y = mx + b

The coefficients of the function and their meaning are explained as follows:

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b is the y-intercept of the function, representing the numeric value of the function when the input variable x assumes a value of 0.

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Due to the negative slope, the line is decreasing.

Hence the line is presented on the image given at the end of the answer.

More can be learned about linear functions at brainly.com/question/24808124

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3 years ago