3 years ago

Find the value of y picture *****

Mathematics

1 answer:

77julia77 [94]3 years ago

3 0

I think its 54 too soo

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anyanavicka [17]

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3 years ago

Complete the identity

spin [16.1K]

Answer: $cos(\pi-x)=-cos(x)$

Step-by-step explanation:

We need to apply the following identity:

$cos(A - B) = cos A*cos B + sinA*sin B$

Then, applying this, you know that for $cos(\pi-x)$ :

$cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x)$

We need to remember that:

$cos(\pi)=-1$ and $sin(\pi)=0$

Therefore, we need to substitute these values into $cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x)$ .

Then, you get:

$cos(\pi-x)=(-1)*cos(x)+0*sin(x)$

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2 years ago

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Harlamova29_29 [7]

Answer:

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Step-by-step explanation:

3 0

1 year ago

Problem number 26 of the Rhind Papyrus says: Find a quantity such that when it is added to StartFraction 1 Over 4 EndFraction of

Rzqust [24]

Answer:

x=12

Step-by-step explanation:

For the given situation , a quantity x is added to $\frac{1}{4} x$ gives 15.

We can set up equation as

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Multiply each term by 4 on both sides to get rid the denominator.

It gives,

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Now, combine like terms

5 x=60

Divide both sides by 5

x=12.

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3 years ago

Anyone’s know this math question

AnnZ [28]

Answer:

look up in goog le it will tell u if not i can help what grade is this??

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers