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defon
3 years ago
8

Rewrite with only sin x and cos x. sin 2x - cos 2x

Mathematics
2 answers:
Ymorist [56]3 years ago
4 0
Sin2x = 2sinxcosx
cos2x = (cosx)^2 - (sinx)^2 = 2(cosx)^2 -1 = 1- 2(sinx)^2

Any combination you want is here.
RoseWind [281]3 years ago
3 0
Sin2x-cos2x
2sinxcosx-2cos^2x-1
2cos^2x+2sinxcosx-1
I think that's how you do this one.
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What are the x-intercepts for the graph of y=3(x - 2)(x+6)?
WARRIOR [948]

Answer:

A

Step-by-step explanation:

Put Y=0

0 = 3(x - 2)(x + 6) \\

Now

x - 2 = 0 \\ x = 2 \\  \\  \\ x + 6 = 0 \\ x =  - 6 \\  \\

so A is right option

5 0
3 years ago
The expression −50x+100 represents the balance, in dollars, of a bank account after x months.
kondor19780726 [428]
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7 0
3 years ago
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expeople1 [14]

Answer:

y=1

Step-by-step explanation:

If the slope of a line is 0, then the line is horizontal.

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7 0
3 years ago
A bicycle manufacturing company makes a particular type of bike. Each child bike requires 4 hours to build and 4 hours to test.
nikitadnepr [17]

Answer:

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Step-by-step explanation:

Hi, to answer this question we have to write a system of equations with the information given:

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Test time (hours) = 4c + 4 a = 100

Where c represents the number of child bikes and a represents adult bikes.

So, for 20 child bikes and 6 adult bikes:

4 (20) + 6(6) = 120

4(20) + 4 (6) = 100

Feel free to ask for more if needed or if you did not understand something.

7 0
3 years ago
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Misha Larkins [42]

Answer:

<u>49</u> <em>is the best answer. Hope this helps!</em>

Step-by-step explanation:

5 0
4 years ago
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