The angle is 117* i think
Solve x(x-5)=0; the roots are 0 and 5.
Draw a number line. Plot 0 and 5 on this line.
Set up 3 intervals, as follows: (-infinity, 0), (0, 5), and (5, infinity).
Now choose a test number from within each interval (e. g., -2, 3, 10).
Subst. each into the inequality x(x-5)

0. In each case, determine whether the inequality is true or false.
Based upon your results here, you should be able to determine on which interval or intervals the inequality is true. Those interval(s) is/are your solution set.
X should be 33 because its a z angle
Hello from MrBillDoesMath!
Answer:
BC = 3 * sin (66)/ sin(38)
Discussion:
From the law of sines:
sin(38) /3 = sin(66)/ BC
BC * ( sin(38)/3 ) = sin(66) => multiply both sides by BC
BC = sin(66) / ( sin(38)/3) => multiply both sides by ( 3/sin(38) )
BC = 3 * sin (66)/ sin(38)
which is the first choice.
Regards,
MrB
P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!