Answer:
Step-by-step explanation:
f(3)=9
f(3) means to substitute x=3,
f(3)=(3(3)^2 +9)/(3+1) =9
look at the angles. they all ad up to 180 degrees devide that by 9, and there you go!
The exact value of
cos90 is 0
sin90 is 1
tan90 is indeterminate.
blank 1: 2
blank2: 6
hope this helps
