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dimaraw [331]
2 years ago
11

Which expression does the number line represent?

Mathematics
1 answer:
seropon [69]2 years ago
5 0

Answer:

I think the answer is 3÷3/4

Step-by-step explanation:

im not sure, when i worked it out in my head that's the answer that made the most sense

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Can some one help me with this question its hard :( down below ill give brainliest
Ymorist [56]

Answer:

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3 years ago
HELP ASAP Find the exact value of sin15° by using a sum or difference formula. BRANLIEST ​
Masja [62]

The exact value of sin 15° is \frac{\sqrt{3}-1}{2\sqrt{2}}.

Solution:

45 – 30 = 15

sin 15° can be written as sin (45° – 30°).

Using trigonometric difference formula:

sin(A – B) = sin A cos B – cos A sin B

sin (45° – 30°) = sin 45° cos 30° – cos 45° sin 30°

The value of sin 45° = \frac{1}{\sqrt{2}}

The value of cos 30° = \frac{\sqrt{3}}{2}

The value of cos 45° = \frac{1}{\sqrt{2}}

The value of sin 30° = \frac{1}{2}

Substitute these values, we get  

$\sin \left(45^{\circ}-30^{\circ}\right)=\frac{1}{\sqrt{2}} \cdot \frac{\sqrt{3}}{2}-\frac{1}{\sqrt{2}} \cdot \frac{1}{2}

                       $=\frac{\sqrt{3}}{2\sqrt{2}}-\frac{1}{2\sqrt{2}}

                       $=\frac{\sqrt{3}-1}{2\sqrt{2}}

$\sin \left(45^{\circ}-30^{\circ}\right)=\frac{\sqrt{3}-1}{2\sqrt{2}}

$\sin15^\circ}=\frac{\sqrt{3}-1}{2\sqrt{2}}

Hence the exact value of sin 15° is \frac{\sqrt{3}-1}{2\sqrt{2}}.

7 0
3 years ago
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34x = 850<br> just a simple equation. I posted it for no reason in particular.
Igoryamba
X= 850/34
X= 25 if that’s what you wanted to know.


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What is 0.7 in inches
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Inga [223]

Answer:

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Step-by-step explanation:

hope you find somone :D

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