2 years ago

Help me and i will give u a brainlliest

Mathematics

1 answer:

kvv77 [185]2 years ago

3 0

Answer:

No solution

Infinate amount of soluions

One solition

No solution

Step-by-step explanation:

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How do you solve cos(pi/24) using Half-Angle formulas, and leaving in simplified form?

adoni [48]

$\cos \frac{\theta}{2}=\sqrt{\frac{1+\cos \theta}{2}}
\\
\\ \cos{\frac{\pi}{24}}=\cos{\frac{\frac{\pi}{12}}{2}}=\sqrt{\frac{1+\cos \frac{\pi}{12}}{2}}= \sqrt{ \frac{1}{2}+ \frac{\cos \frac{\pi}{12}}{2} } 
\\
\\ \cos{\frac{\pi}{12}}=\cos{\frac{\frac{\pi}{6}}{2}}=\sqrt{\frac{1+\cos \frac{\pi}{6}}{2}}= \sqrt{ \frac{1}{2}+ \frac{ \frac{ \sqrt{3} }{2} }{2} } =\sqrt{ \frac{2}{4}+ \frac{ \sqrt{3} }{4} } = \sqrt{\frac{ 2+\sqrt{3} }{4} } = 
\\
\\ =\frac{ \sqrt{2+\sqrt{3}} }{2} 
$

$\cos{\frac{\pi}{24}}= \sqrt{ \frac{1}{2}+ \frac{\cos \frac{\pi}{12}}{2} } = \sqrt{ \frac{1}{2}+ \frac{\frac{ \sqrt{2+\sqrt{3}} }{2}}{2} } = \sqrt{ \frac{2}{4}+ \frac{ \sqrt{2+\sqrt{3}} }{4}} } =\sqrt{ \frac{ 2+\sqrt{2+\sqrt{3}} }{4}} } 
\\
\\\cos{\frac{\pi}{24}}=\frac{\sqrt{2+\sqrt{2+\sqrt{3}}}} {2}$

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3 years ago

Which word would describe the likelihood of rolling an even number on a fair number cube?

Ilia_Sergeevich [38]

The answer is Equally Likely because there’s both 3 even numbers and odd numbers on a cube/dice.

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3 years ago

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Which of the following represents a function?

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The 3rd one on top is correct

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3 years ago

What is the sum of the measure of the inner angle of a 13 sided polygon? A. 2340° B. 1300° C. 2700° D. 1980°

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Hi there! :)

Answer:

D. 1980°

Find the sum of the measure of a 13-sided polygon using the formula:

Sum = 180(n-2), where n = number of sides

Therefore:

S = 180(13 - 2)

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Answer:

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Step-by-step explanation:

y = -5/2x + b

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6 = b

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2 years ago