Answer:
SOH-CAH-TOA

~~~~~~~~~~
H= 
O= 5
A= 9
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Sin = 
Cos= 
Tan = 
Step-by-step explanation:
A function is a mapping from a set A to a set B, If, for all a1,a2 in A, where a1=a2, a1 and a2 get mapped to the same b in B
Answer:
the answer to your question is c
The best thing to do is to rewrite the fractions as decimals
-2/3 is approx. equal to -0.6666667
So a little past half way (to the left) between -1 and 0
1 1/5 is 1.5 so that is right between 1 and 2
Hope this helps :)