Answer:
8
Step-by-step explanation:
(5*2)+(2*5)-12=
10+10-12=
20-12=
10.
The answer is 10.
look below
I'll go in order from top to bottom
i4=1
Explanation: Rewrite i14 as (i4)3×i2 . If i=√−1, then i2=−1 . From here (i2)2=(−1)2 , so i4=1
c) 50 degrees
360-260 = 100 degree central angle
inscribed angle = 1/2 (100) = 50
