Explain how alliances might make nations bolder than they might otherwise be?

Explanation:

A nation may become more bold due to an alliance because when an alliance is formed, it usually involves the coming together of both nation's military. This fusion will cause that nation or those nations to gain an ego, as they will feel more unstoppable thanks to their exchange of military equipment, tactics, etc.

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angle a = 40.6°

step-by-step explanation:

for any right angle triangle we know the pythagoras theorem reveals

hypotenuse² = height²+base²

by this formula we will calculate the length of hypotenuse

h² = 6²+7²

⇒ h =√36+49 = √85 = 9.22

now from the given triangle sin a = height/ hypotenuse

                                                sin a = 6/9.22 = 0.651

therefore

so angle a = 40.6°

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