Answer:

Step-by-step explanation:
From the diagram, side length
is opposite to angle A and side length
is adjacent to angle A.
Recall the mnemonics SOH CAH TOA.
We use TOA, because it involves opposite and adjacent.


The correct choice is A.
Answer:
The diver will be in free fall for
seconds.
Step-by-step explanation:
The distance in feet, that an object falls in t seconds is given by the function
.
Now, given that the height is 4800 feet and we have to calculate the number of seconds the diver was in a free fall.
Therefore,
⇒
⇒
seconds.
Therefore, the diver will be in free fall for
seconds. (Answer)
Answer: 
Step-by-step explanation:


Answer:
The area of shaded sector
Formula A = (θ / 360°) × πr²
θ=360°-140°=220°
r=18yd
We have A=(220/360)×3.14×(18)²
=621.72yd²
Area of sector is621.72yd².