Answer:
The sine of the acute angle is 
Step-by-step explanation:
using a graphing tool
see the attached figure
Let
A-----> the acute angle formed by the given line and the positive x-axis
In the right triangle XYZ
we know that

we have


Applying the Pythagoras Theorem find the value of xz

substitute

Answer:
78.5 i think
Step-by-step explanation:
F(X)=13 Just Plug 10 into the X in the equation
Step-by-step explanation:
m=-2
m^2+9m+3
substitute-2 in m
-2^2+9(-2)+3
= -19