Answer:
Step-by-step explanation:
It's easier to convert the angle into degrees.
5π/8 ≅ 112.5°, which is in quadrant II
That’s a obtuse angle I’m pretty sure.
Answer:
The shaded area is 
Step-by-step explanation:
we know that
The shaded area is equal to the area of the large square minus the area of the two smaller squares
so

---> expression that represent the shaded area
Calculate the shaded area
Remember that

substitute

Answer:
1st : Maximum Value
2nd: When x<-1
3rd : x>-1
4th: All real Numbers
5th : All numbers less than or equal to 0