The Coast Guard has sent a rescue helicopter to retrieve passengers off a disabled ship. The ship has called in its
position as 1.7 miles from shore. When the helicopter
passes over a buoy that is known to be 1.3 miles from
shore, the angle formed by the shore, the helicopter,
and the disabled ship is 90°. Determine what
the altimeter would read to the nearest foot
when the helicopter is directly above the buoy.

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

30

step-by-step explanation:

times by times

so far i think you have the right thing going for you just remember soh cah toh

step-by-step explanation:

sine over hypotenuse

cosine   equals adjacent

tangent over hypotenuse

36 girls

step-by-step explanation:

the 48 boys is 4 parts of the ratio

divide 48 by 4 to obtain one part of the ratio

= 12 ← 1 part of the ratio

3 parts = 3 × 12 = 36 ← number of girls