n - 7 = 21, n= 28 should be right bc the difference of 28 and 7 is 21
Answer:
10
Step-by-step explanation:
45-15=30
30/3=10
-15x -8y=-27 Thas the answer
Call the angles of depression D.
then tan(D)=20/30, or I
arctan(tan(D)) = arctan(⅔)
D=33.690. A is the answer
your calculator probably uses tan^-1 rather than arctan
