Answer:
25 degrees
Step-by-step explanation:
40 + 50 = 90
2 x 25 = 5
Answer:
C: 
Step-by-step explanation:

Since a =
:

Since n = 4 :

Subtract all the numbers from 360 and there you go!
It is true. Guptas did figure out the earth was round by observing lunar eclipses.