What was the significance of christopher columbus first letter from the americas

To get support and sponsored for more voyages and exploration.

Explanation:

The significance of Christopher Columbus's first letter from the Americas was to get the attention of the audience of European officials and merchants, specifically the Catholic monarchs, in King Ferdinand and Queen Isabella of Spain, so he could hopefully get sponsored for more voyages and exploration.

With a keen interest for economic opportunities, Columbus in his first letter, fully point out potential economic gain to make his voyage appear a success.

Columbus emphasizes the masses of new souls available and inclined for conversion to Catholic Christianity

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°