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S_A_V [24]
3 years ago
7

Verify sin(360° - 0) = -sin0​

Mathematics
2 answers:
zaharov [31]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

Using the Addition formula for sine

sin(x ± y) = sinxcosy ± cosxsiny

Consider the left side

sin(360 - Θ ), then

= sin360°cosΘ - cos360°sinΘ

= 0 × cosΘ - 1 × sinΘ

= 0 - sinΘ = - sinΘ → verified

worty [1.4K]3 years ago
4 0

Answer:  sin(360\°-\theta)=-sin\theta is TRUE (See the explanation)

Step-by-step explanation:

To verify sin(360\°-\theta)=-sin\theta you need to use the following identity:

sin(x\±y)=sin(x)\ cos(y)\±cos(x)\ sin(y)

It is important to know that:

sin(360\°)=0\\\\cos(360\°)=1

Then, knowing this, you get:

sin(360\°-\theta)=sin(360\°)\ cos\theta-cos(360\°)\ sin\theta=0\ cos\theta-1\ sin\theta=-sin\theta

Therefore sin(360\°-\theta)=-sin\theta is TRUE.

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N76 [4]

Answer:

Option D. 9

Step-by-step explanation:

There are two ways to obtain the answer to the question.

Method 1:

Let 2x + 1 = 0

Making x the subject, we have

2x + 1 = 0

Collect like terms

2x = –1

Divide both side by 2

x = –1/2

Now, put the value of x into the expression 4x³ – 6x² – 8x + 7, we have:

4x³ – 6x² – 8x + 7

x = –1/2

4(–1/2)³ – 6(–1/2)² – 8(–1/2) + 7

4(–1/8) – 6(1/4) – 8(–1/2) + 7

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– 4/2 + 4 + 7

– 2 + 4 + 7

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Method 2:

Divide 4x³ – 6x² – 8x + 7 by 2x + 1

Please see attached photo for explanation.

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3 years ago
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Hatshy [7]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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For instance:

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According to this function we can easily check a proportional relationship among its points:

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k=\frac{y}{x}=\frac{2}{1}=\frac{4}{2}=\frac{12}{6}\Rightarrow k=2

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