Answer:
To be honest, I think I would ask a professor because I am not a professional.
Step-by-step explanation:
Answer:
4
Step-by-step explanation)
n(3) - 5 = 7
n(3)= 7 + 5
n(3)= 12
n3/3 = 12/3
n =4
<h2>
Measure of the angle between their courses is 95°</h2>
Step-by-step explanation:
Speed of submarine 1 = 25 knots = 28.77 mph
Speed of submarine 2 = 20 knots = 23 mph
Time taken = 3 hours
Distance traveled by submarine 1 = 28.77 x 3 = 86.31 miles
Distance traveled by submarine 2 = 23 x 3 = 69 miles
Distance between them is 100 nautical miles = 115.08 miles
Refer the figure
By cosine formula we have
a = 86.31 miles
b = 115.08 miles
c = 69 miles
Substituting
Measure of the angle between their courses is 95°
1) m-5= -18 (add 5 to both sides)
m= -13
2) m-11= -4 (add 11 to both sides)
m= 7
3) x+10=22 (subtract 10 from both sides)
x= 12
4) n-19= -16 (add 19 to both sides)
n= 3