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3 years ago

Find the exact value of cos 45º in simplest form with a rational denominator.

Mathematics

1 answer:

goldenfox [79]3 years ago

8 0

Answer:

$\frac{\sqrt{2} }{2}$

Step-by-step explanation:

Cos is Adjacent over Hypotenuse, (see picture below)

x/xsqrt(2)

1/sqrt(2)

sqrt(2)/2

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7+8/5-2 work it out in BIDMAS

cricket20 [7]

Answer:

bodmas

Step-by-step explanation:

before answering read question right it bodmas

and its 7+8=15

5-2=3

--- is 3 wholes

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2 years ago

If you mix butter (1) and syrup (1 2/3) what is it all together

Darya [45]

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>

Answer:

Let's see...

Step-by-step explanation:

The keywords here are:

mix
all together

These words mean to <em>add</em> in mathematical terms

So, that being said, what is the problem?

--> We must add the butter and syrup together

<h3 />

$1 + 1\frac{2}{3} = ?$

$1 + 1\frac{2}{3} = 2\frac{2}{3}$

<h3>Your answer is $2\frac{2}{3}$ .</h3>

I hope this helps!

- sincerelynini

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3 years ago

“ I need help with these . I’m trying my best so can u help .

Debora [2.8K]

Can not see it sorry

5 0

3 years ago

Read 2 more answers

I have no idea what I'm doing :^

mars1129 [50]

Answer:

press this link and u will get the answers

https://www.math.tamu.edu/~rosanna/141/WIR2_done.pdf

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3 years ago

Read 2 more answers

Please help fast ^^

allsm [11]

The discriminante :
b^2-4ac

1^2 - 4 * -2 * -28 = 1 - 224 = -223

When the discriminant (b^2-4ac) is less than 0, the equation had no real solutions.

-223<0, so, 2x^2+x-28 = 0 has no real solutions.

Hope that helps :)

7 0

2 years ago

Find the exact value of cos 45º in simplest form with a rational denominator.​

Find the exact value of cos 45º in simplest form with a rational denominator.