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schepotkina [342]
3 years ago
6

Find the exact value of cos(7pi/12) using half-angle identities. I'm still not sure how to solve this :( Any help is appreciated

!
Mathematics
2 answers:
Norma-Jean [14]3 years ago
7 0
Did you plug it into your calculator? That's a great place to start.
Anna007 [38]3 years ago
6 0

Answer:

I had no idea how to solve this on edge either. I ended up looking on you tube and found this guy named Larry. He did it step by step in a short video!!! I will put it down below so you can watch it if you need help.

Step-by-step explanation:

The answer is B.√2-√6 over 4

video name on you tube:

cos 7pi/12 find the exact value of the trig function

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Una caja tiene 60 bombones eba se comio 1/5 bombones y ana 1/2 bombones cuantos bombones se comio eba y ana
DedPeter [7]

Responder:

42 bombones

Explicación paso a paso:

Dado que :

Número de bombones = 60

Cantidad consumida por Eba = 1/5 * 60 = 12

Cantidad comida por Ana = 1/2 * 60 = 30

Cantidad de chocolate que comieron Eba y Ana:

(12 + 30) = 42

De ahí que Ana y Eba se comieran 42 bombones

7 0
2 years ago
If five times of a number is 125 then 0•8 of this number is​
Nady [450]

Answer:

20

Step-by-step explanation:

5n = 125

n = 25

0.8 x 25 = 20

5 0
3 years ago
I NEED HELP ASAP 50 POINTS!!!
Rudiy27

Answer:

Step-by-step explanation:

Standard form:  -4x³ + x + 7

Name of the polynomial:

Based on number of terms:  3 terms are there.

Trinomial

Based on degree:

Degree of the polynomial is 3

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5 0
2 years ago
Find 70% of 200 <br> I’m unsure of this pls can I have some help
elena-s [515]

Answer:

140

Step-by-step explanation:

  70%            200

 ----------    *    ----------  =  70*2 = 140

  100%              1

you cross out the 2 zeros from the 100% so it will be one then croos out the 2 zeros from 200 and you will have 70 * 2 and you will get 140

7 0
2 years ago
Read 2 more answers
Levi works as a salesperson at an electronics store and sells phones and phone accessories. Levi earns a $8 commission for every
Juliette [100K]

8p + 3a = 213 and p + a = 41 are the two required equations which will give us the number of phones and accessories sold by Levi.

<u>Solution:</u>

Levi earns a $8 commission for every phone he sells and a $3 commission for every accessory he sells.

On a given day, Levi made a total of $213 in commission from selling a total of 41 phones and accessories.  

We have been asked to write a system of equations that could be used to determine the number of phones sold and the number of accessories sold. We also have to define the variables that you use to write the system.

Let us denote the number of phones as ‘p’ and number of accessories as ‘a’

So, we can write the following equations from the given data:

Given that levi made $ 213 commission

8p + 3a = 213

And,  Levi sold 41 phones and accessories. So we can frame a equation as follows:

p + a = 41

These two equations can be used and solved to determine the number of phones and accessories sold.

5 0
3 years ago
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