Answer:
The rate of change of the tracking angle is 0.05599 rad/sec
Step-by-step explanation:
Here the ship is traveling at 15 mi/hr north east and
Port to Radar station = 2 miles
Distance traveled by the ship in 30 minutes = 0.5 * 15 = 7.5 miles
Therefore the ship, port and radar makes a triangle with sides
2, 7.5 and x
The value of x is gotten from cosine rule as follows
x² = 2² + 7.5² - 2*2*7.5*cos(45) = 39.04
x = 6.25 miles
By sine rule we have

Therefore,

α = Angle between radar and ship α
∴ α = 58.052
Where we put
to get
and differentiate to get
= 3.208 degrees/second = 0.05599 rad/sec.
6.5x10^7
count the decimal places over, with the first being zero
Answer:
the decimal is 1.36
the fraction is 34/25
Step-by-step explanation:
so you have on full grid and you have one that has 36 squares filled.
Answer:
27.7
Step-by-step explanation:
Pythagorean Theorem
-
=
(10.7 comes from half of the 21.4 side)
= height