Blank, a native american, was a confederate commander during the civil war. he remained loyal to the confederacy throughout the war. he was the blank commander to surrender to the union forces after the formal surrender at appomattox court house.

Stand Watie, a Native American, was a Confederate commander during the Civil War. He remained loyal to the Confederacy  throughout the war. He was the last commander to surrender to the union forces after the formal surrender at Appomattox Court House.

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°