Answer:
Step-by-step explanation:
The picture of the question in the attached figure
we know that
The measurement of the external angle is the half-difference of the arches that comprise
so
Remember that the sum of the major arc and a minor arc is equal to 360 degrees
we have
----> is given
substitute the values
B
0.375
probably about 3.5
Answer: x + 30 + 90= 180(sum of angles on a straight line)
x= 180-120
x=60
See below
1) x=2-1
x=1
2) (x+1)(x+1)=2(x+1)
3) 10x-20 -11 = 4+3x
10x-3x=20+11+4
7x=35
x=5
Answer: -3.17
-3.6 + 0.43 = -3.17