Answer:
the submarine is 92.994 feet ≈ 93 feet deep from the surface of the water
Step-by-step explanation:
We can think in a triangle where the hypotenuse is the detection distance and the angle with the horizontal surface of water is the depression angle, then the underwater distance is the vertical side of the triangle.
If we denote Ф as the angle of depression ,d as the detection distance and x as the unknown depth of the submarine, using trigonometry:
x = d* sin Ф
thus
x= d * sin Ф = 238 feet * sin 23° = 92.994 feet ≈ 93 feet
207054 minus 206343 is 711
Answer:
52 min
Step-by-step explanation:
Original price marked on the item = €450
rate of discount = 12%
A.
Discount amount = €450 × 12/100 = €54
So amount of reduction is €54
B.
Sale.price = original price - discount
= €450 - €54
= €396
Sale price is €396.
