Answer:
we have a right triangle and to get the internal angle of the right triangle formed at the helicopter we subtract 62 degrees from 90 which equals 28 degrees
we now use the cosine to find the distance (d) from the helicopter
cosine 28 = 85/d
d = 85 / cosine 28 = 85 / 0.8829 = 96.2736 = 96 feet
4a * 7c (-2 + -4)= -168ac.
Ok so we do
-11/4 + 2/1
find like denominator
-11/4 + 8/4
=
-3/4
So thats your final answer :)
