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4 years ago

What the answer for cos (-270)

Mathematics

2 answers:

Helga [31]4 years ago

7 0

0.98438195063 im pretty sure

Mrrafil [7]4 years ago

6 0

Answer:

Step-by-step explanation:

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Solve for x<br><br> sin(x-20) = cos(x)

tatuchka [14]

Answer:

$x=\frac{6480^{\circ \:}n+1980^{\circ \:}}{36}$

$x=\frac{36\pi n+11\pi }{36}$

Step-by-step explanation:

We can use the identity: $\cos \left(x\right)=\sin \left(90^{\circ \:}-x\right)$ to simplify this into: $\sin \left(x-20^{\circ \:}\right)=\sin \left(90^{\circ \:}-x\right)$

The identity sin(x) = sin(y) --> $x=y+2\pi n,\:x=\pi -y+2\pi n$ , can be used to simplify this further:

$x-20^{\circ \:}=90^{\circ \:}-x+360^{\circ \:}n$ (Add 20 to both sides)

$x=-x+360^{\circ \:}n+110^{\circ \:}$ (Add x to both sides)

$2x=360^{\circ \:}n+110^{\circ \:}$ (Divide both sides by 2)

$\frac{2x}{2}=\frac{360^{\circ \:}n}{2}+\frac{110^{\circ \:}}{2}$ (Simplify)

$x=\frac{6480^{\circ \:}n+1980^{\circ \:}}{36}$ If required, we can convert this into radians:

$x=\frac{36\pi n+11\pi }{36}$

7 0

3 years ago

Gio earns $15.00 per hour working at a store. Today, he spent 2.5 hours organizing shelves, 1.8 hours helping customers, and 26/

kirill [66]

Answer:

he makes $142.50

Step-by-step explanation:

you add 2.5, 1.8, and 26/5 and get 9.5 hours

then multiple 15 by 9.5 and get 142.50

6 0

4 years ago

The human resources manager at a company records the length, in hours, of one shift at work, X. He creates the

kiruha [24]

Answer:

.84

Step-by-step explanation:

8 0

4 years ago

506 students went on a field trip nine buses were filled and 29 students traveled in cars how many students were in each bus

sweet-ann [11.9K]

I think the answers you are looking for to this question is 480 I think it’s correct try and see

8 0

3 years ago

Read 2 more answers

How many different 6-letter strings are made up of 2 a's, 2 b's and 2 c's?

RSB [31]

The answer to this question would be:90 different words/strings.

This is a question about probability. In this question, there are 3 different kinds of the letter that consist of 2 letter each. The same letter will be considered same, so the probability will lessen if there are more same letter. The calculation would look like this : 6!/(2! 2! 2!)= 90 different words/strings.

3 0

4 years ago