9.B
10.C
12.B
12. You have to do the circumference of the circle and then divide it by 2.
10. 7^2 is not 14 it is 49 because 7*7 is 49.
Answer:
15°,105°,195°,285°
Step-by-step explanation:
\frac{2 tan ~x}{1-tan^2 x} =\frac{1}{\sqrt{3} } \\tan ~2x=tan~30,tan~210,tan~ (30+360),tan~(210+360)\\2x=30,210,390,570\\x=15^\circ,105^\circ,195^\circ,285^\circ
Best guess is it’s the second one but I believe it’s between A and B sorry If I’m wrong.
17.17 is one tenth of 170.
I hope I helped!
-Bub
I think it is 1 1/3 ? If not I’m so sorry
