Why is the union victory at the battle of gettysburg considered the turning point in the civil war

“In a must-win clash, Union forces halted the northern invasion of Robert E. Lee's Confederate Army. ... The Union's eventual victory in the Battle of Gettysburg would give the North a major morale boost and put a definitive end to Confederate General Robert E. Lee's bold plan to invade the North.”

sorry if this is wrong!

-yoseisch :)

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°