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kirza4 [7]
3 years ago
11

Rewrite with only sin x and cos x. sin 3x - cos x

Mathematics
1 answer:
allochka39001 [22]3 years ago
3 0

Answer:

sin (3 x) - cos (x)=

= sin (2x + x) - cos (x)=

= sin 2x * cos x + cos 2 x * sin x - cos x = ( using additional formulas )

= 2 sin x cos² x + ( cos² x - sin² x ) sin x - cos x =

= 2 sin x cos² x + ( 1 - sin² x - sin² x ) sin x - cos x =

= 2 sin x cos² x + ( 1 - 2 sin² x ) sin x - cos x =

= 2 sin x cos² x + sin x  - 2 sin³ x - cos x

Answer: B )

Step-by-step explanation:

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Dividing a Fraction into Equal Groups
Sergeu [11.5K]

Answer:

Each hiker carried the backpack for 1/5 of the total trail distance

Step-by-step explanation:

Three members of a teen hiking group hiked 3/5  of the entire Appalachian trail, each teen carried the backpack the same distance

=>  each teen carried the backpack for = (1/3) (3/5)  of total Distance = 1/5  

3 0
2 years ago
What is the missing length of a triangle with the side of 4​
denpristay [2]

Answer:

It can be almost ANYTHING but 2nd and 3rd length have to be bigger than 4

Step-by-step explanation:

You got the 1st length of the triangle, which is 4. And then we can "guess" what those length are. But whatever the length is, it won't be 0, and 2 length add up together will not be equal or less than 4, if you don't understand, draw it on the paper and you will get a straight line.

5 0
4 years ago
Read 2 more answers
Simplify<br><br> a+a+a=<br> 4b-b<br> 3x2+x2
Reika [66]
<h2>Good morning,</h2>

<em><u>__________________</u></em>

<em><u>Answer</u></em>:

a+a+a = 3a.

4b-b = 3b.

3x²+x² = 4x².

<u><em>explanation</em></u>

a+a+a = 3a.

4b-b = b(4 - 1) = b × 3 = 3b.

3x²+x² = x²(3 + 1) = x² × 4 = 4x².

_______________________________

:)

7 0
4 years ago
London Heathrow airport see on average 191,200 passengers a day how many passengers is this per minute. I need to show the steps
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First you have to ask, how many minutes are in a day?
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24×60=1440 minutes in a day.

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191,200÷1440=132.7778

Even though the 7 is bigger than a 5, you do not round up because it doesn't count as a full person.
132 people a minute is your answer.
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4 years ago
Write 30/100 of a dollar in decimal amount
Zarrin [17]
In the decimal form: .3.
6 0
4 years ago
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