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krek1111 [17]
3 years ago
12

Sin 4x=4sinx times cos x times cos 2x

Mathematics
1 answer:
Katarina [22]3 years ago
6 0

Answer:

Since

sin

2

x

=

2

sin

x

cos

x

, than:

sin

4

x

=

2

sin

2

x

cos

2

x

=

2

⋅

2

sin

x

cos

x

⋅

cos

2

x

=

4

sin

x

cos

x

cos

2

x

.

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Which of the following points does not lie on the line whose equation is x+ y = 7?
makkiz [27]
The answer is <span>(-1, -6)
</span>
Let's go through all choices:
1. (x, y) = (-10, 17)
x + y = 7
-10 + 17 = 7
17 - 10 = 7
7 = 7
So, these points lie on the line.

2. (x, y) = (<span>13/3, 8/3)
</span>x + y = 7<span>
13/3 + 8/3 = 7
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7 = 7
</span>So, these points lie on the line, too.

3. (x, y) = <span>(-1, -6)
</span>x + y = 7
-1 + (-6) = 7
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So, these points DO NOT lie on the line.
5 0
3 years ago
Ryan drove 480 miles and used 20 gallons of gas. How many miles did Ryan's car get per gallon? Write an equation that would solv
lisabon 2012 [21]

Answer:

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Step-by-step explanation:

Step one:

given data

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Step two:

hence the equation that we used in solving the problem is stated as

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3 years ago
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gulaghasi [49]
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