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nordsb [41]
3 years ago
12

Need help Do today please

Mathematics
1 answer:
ad-work [718]3 years ago
7 0

Answer:

Step-by-step explanation:

OKay

Just use

slope formula

(y2-y1)/(x2-x1)

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Find the expansions of sin⁡5θ and cos⁡5θ in terms of sin⁡θ and cos⁡θ.
qwelly [4]
\bf \textit{quad-angle identities}\\\\\\

cos(4\theta)=8cos^4(\theta)-8cos^2(\theta)+1
\\\\\\
sin(4\theta)=
\begin{cases}
8sin(\theta)cos^3(\theta)-4sin(\theta)cos(\theta)\\\\
4sin(\theta)cos(\theta)-8sin^3(\theta)cos(\theta)
\end{cases}\\\\
-----------------------------\\\\


\bf sin(5\theta)\iff sin(4\theta + \theta)
\\\\\\
sin(4\theta)cos(\theta)+cos(4\theta)sin(\theta)
\\\\\\\
[4sin(\theta)cos(\theta)-8sin^3(\theta)cos(\theta)]cos(\theta)\\\\ + [8cos^4(\theta)-8cos^2(\theta)+1]sin(\theta)

\bf -----------------------------\\\\
cos(5\theta)\iff cos(4\theta + \theta)
\\\\\\
cos(4\theta)cos(\theta)-sin(4\theta)sin(\theta)\\\\\\\
[8cos^4(\theta)-8cos^2(\theta)+1]cos(\theta)\\\\
-
[4sin(\theta)cos(\theta)-8sin^3(\theta)cos(\theta)]sin(\theta)

distribute... and simplify :)

4 0
3 years ago
Ann is grouping 38 rocks. She can put them into groups of 10 rocks or as single rocks. What are the different ways Ann can group
hoa [83]

Answer: There will be two different ways of doing so.

Step-by-step explanation:

Since we have given that

Total number of rocks =38

If we want to groups of 10 rocks or as single rocks then there are 2 different ways ;

<u>Case I:</u>

if we group into 10 rocks

there will be four sets in which Ist set contains 10 rocks

Second set contains 10 rocks

Third set contains 10 rocks

and Fourth set remains with 8 rocks only.

<u>Case II:</u>

if we group as single rocks .

There will be 38 sets .



7 0
3 years ago
What is the domain<br> 1. all real numbers<br> 2.x &gt; 2<br> 3.y &gt; 2<br> 4.x &lt;2
Mama L [17]

Answer:

x > 2

(in the graph, the x value does not go below 2.)

7 0
3 years ago
Determine how many seats there would be in the 5th row
Vitek1552 [10]

Answer:

I think there would be 12 seats

Step-by-step explanation:

The pattern adds two each time, so you can look at the last row and add two. 10+2=12

4 0
3 years ago
What is the range of the exponential function shown below?<br> f(x) = 9•2^x
LenKa [72]

Answer:

i think the answer is y>0

Step-by-step explanation:

6 0
3 years ago
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