Answer:
b i think (im not really sure
Step-by-step explanation:
Answer:
180-30
=150
Step-by-step explanation:
subtract whole area with degree given
Using trigonometry
tan(x)=9/6
use your calculator to find x using tan-1(9/6) and you get 56.3° which is basically the first answer
Answer:
A. 
Step-by-step explanation:
÷ 
21 ÷ 7 = 3
28 ÷ 7 = 4