Answer:
Use you calculator.
Step-by-step explanation:
There will be a way on your calculator to do tan^-1. It may be called arctan. They are the same thing.
Answer:
The difference is 4.4n−13.
Step-by-step explanation:

+ 3x + 5
-

+ 6x + 5
-----------------------------------------
4x - 3 + 0
Answer:
Should be 5 in.
Step-by-step explanation:
C=2*Pi*R
31.4=2*3.14*R
substitute 5 for radius= 2*5=10
10*3.14=31.4
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