3 years ago

Please help I dont get it

Mathematics

1 answer:

Lisa [10]3 years ago

4 0

Answer:

382 in ^3

Step-by-step explanation:

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Simplify and write the trig expression in terms of sin and cos

dsp73

We have:

$cot(-x)cos(-x)+sin(-x)=-\frac{1}{f(x)}$

Then we use trigonometric identities to change the negative sign of the trigonometric functions, so:

$-sin(x)-cot(x)cos(x)=-\frac{1}{f(x)}$

We clear f(x):

$f(x)=\frac{1}{sin(x)+cot(x)cos(x)}=\frac{1}{sin(x)+\frac{cos(x)}{sin(x)}cos(x)}=\frac{1}{sin(x)+\frac{cos^2(x)}{sin(x)}}$

we simply what we can:

$f(x)=\frac{1}{\frac{sin^2(x)+cos^2(x)}{sin(x)}}=sin(x)$

Thus, the correct answer is;

$f(x)=sin(x)$

6 0

1 year ago

How much would something cost if it was $20 but was 1/5 percent off??

QveST [7]

4$ would be the cost of the item

6 0

3 years ago

Read 2 more answers

Can someone help me!!!

Eva8 [605]

$\text {Distance} = \sqrt{(7-0)^2 + (-6+3)^2} = \sqrt{7^2+(-3)^2} = \sqrt{58} = 7.6 \text{ units}$

Answer: 7.6 units

7 0

3 years ago

Help plz!!!!!!!!!<br><br><br> *tysm*

Dennis_Churaev [7]

-7.5x = -5.61 - 0.39

x = -6 /-7.5

x = 0.8

5 0

3 years ago

Which expression is equivalent to x - 5/3

soldier1979 [14.2K]

Answer:

$\frac{1}{3}(3x-5)$

Step-by-step explanation:

If you expand an equation you get its equivalent expression

6 0

3 years ago

Please help I dont get it​

Please help I dont get it