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blondinia [14]
3 years ago
10

Use the cosine sum and difference identities to find the exact value. COS(5pi/12)

Mathematics
2 answers:
nydimaria [60]3 years ago
8 0
5π/12 = (5 · 180°) : 12 = 75°
cos 75° = cos ( 45° + 30° )= cos 45° cos 30° - sin 45° sin 30° =
=√2/2 * √3/2 - √2/2 * 1/2 = \frac{ \sqrt{6} }{4} - \frac{ \sqrt{2} }{4}= \frac{ \sqrt{6} - \sqrt{2} }{4}
=(2.4495 - 1.4142): 4 = 0.258825
Nina [5.8K]3 years ago
5 0
Square root of 2(square root of 3-1)/4. Honestly apex is trying to mess you up lol
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Plz help ASAP..........................
goldfiish [28.3K]

Answer:

2(13a-5)

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Llus Solve using the correct order of operations. P (42 - 8): 2 = [?] E MD AS Enter<br>please help​
astraxan [27]

Answer:

The answer is 4.

Step-by-step explanation:

First you look in the parenthesis (PEMDAS)

Do the exponent first (PEMDAS).

You should end up with (16-8)/2

What you should do next is (8)/2 (PEMDAS)

Your last step leaves you with 4 (PEMDAS)

7 0
3 years ago
We know 5. 3 = 15. Which 2 of the following statements must also be true? (You need to select 2 answers) 9 5 is a factor of 15.
podryga [215]

Answer: 5 is a factor of 15.

15 is a multiple of 3.

Step-by-step explanation:

A Factor, is a number that can divide another number without a remainder. For example, 5 is a factor of 15 ad it can divide 15 evenly.

A multiple is simply a times table. For example, the multiples of 3 are 3, 6, 9, 12, 15, 18, 21 ......

Therefore, the correct option from the answers given are:

5 is a factor of 15.

15 is a multiple of 3.

3 0
2 years ago
[HELP] For j(x) = <img src="https://tex.z-dn.net/?f=5%5Ex%5E-%5E3" id="TexFormula1" title="5^x^-^3" alt="5^x^-^3" align="absmidd
Alina [70]

The difference quotient of the function that has been presented to us will turn out to be 5.

<h3>How can I calculate the quotient of differences?</h3>

In this step, we wish to determine the difference quotient for the function that was supplied.

To begin, keep in mind that the difference quotient may be calculated by:

Lim h->0 \frac{f(x+h)-f(x)}{h}

Now, for the purpose of the function, we need this:

Then we will have:

$$\begin{aligned}&\lim _{h \rightarrow 0} \frac{j(x+h)-j(x)}{h} \\&\lim _{h \rightarrow 0} \frac{5 *(x+h)-3-5 * x+3}{h} \\&\lim _{h \rightarrow 0} \frac{5 x+5 h-3-5 x+3}{h} \\&\lim _{h \rightarrow 0} \frac{5 h}{h}=5\end{aligned}$$

j(x) = 5x - 3

Then the following will be true:

Therefore, 5 is the value of the difference quotient for j(x) is %

Read the following if you are interested in finding out more about difference quotients:

brainly.com/question/15166834

#SPJ1

6 0
1 year ago
The expression 20z−8 factored using the GCF is
Free_Kalibri [48]

GCF of 20 and 8 is 4

4(5z - 2)

8 0
3 years ago
Read 2 more answers
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