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taurus [48]4 years ago

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Which is a major theme from The Land?

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Explanation:

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3 years ago

23. Find the exact value of cos(20) knowing that: *

Kaylis [27]

Answer:

$\cos(2\theta) = 0$

Explanation:

Given

$\sin(\theta) = -\frac{\sqrt 2}{2}$

$270^o < \theta < 360^o$

Required

$\cos(2\theta)$

Recall that:

$\sin^2(\theta) + \cos^2(\theta) =1$

Substitute: $\sin(\theta) = -\frac{\sqrt 2}{2}$

$(-\frac{\sqrt 2}{2})^2 + \cos^2(\theta) =1$

$\frac{1}{2} + \cos^2(\theta) =1$

Collect like terms

$\cos^2(\theta) =1-\frac{1}{2}$

$\cos^2(\theta) =\frac{1}{2}$

$\cos(2\theta)$ is calculated as:

$\cos(2\theta) = \cos^2(\theta) - \sin^2(\theta)$

So, we have:

$\cos(2\theta) = \frac{1}{2} - (-\frac{\sqrt 2}{2})^2$

$\cos(2\theta) = \frac{1}{2} - \frac{2}{4}$

$\cos(2\theta) = \frac{1}{2} - \frac{1}{2}$

$\cos(2\theta) = 0$

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3 years ago

What were the main differences between the German states?

svlad2 [7]

Is it multiple choice?

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Who is Ahmad shah Durrani?

NikAS [45]

Answer:was the founder of the Durrani Empire and is regarded as the founder of the modern state of Afghanistan. ... After the assassination of Nader Shah Afshar in 1747, Ahmad Shah Durrani was chosen as King of Afghanistan.

Explanation:

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3 years ago

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What areas that were settled by the French in America

NeTakaya

Answer:

New France, French Nouvelle-France, (1534–1763), the French colonies of continental North America, initially embracing the shores of the St. Lawrence River, Newfoundland, and Acadia (Nova Scotia) but gradually expanding to include much of the Great Lakes region and parts of the trans-Appalachian West.

Explanation:

Hope this helps :P

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3 years ago