Which of the following people worked for independence in southern South America including countries like Argentina and Chile?

José de San Martín

Explanation:

José de San Martín was responsible for declaring Peruvian independence. He was a famous revolutionary leader and helped independence movements in southern South America.

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°

the answer is a. mothma gupta.