Answer:
21.8014094864
Step-by-step explanation:
tan(x)= 4/10
=0.4
inverse tan(0.4)
21.8014094864
I am absolutely sure that the task <span> b = 3, then 3x + y = 1 and bx - y = 3 is NOT parallel, which means that the statement represented above is FALSE.
To make sure you can check it using : </span>

Hope now it's obvious. Regards!