Let α represent the acute angle between the horizontal and the straight line from the plane to the station. If the 4-mile measure is the straight-line distance from the plane to the station, then
sin(α) = 3/4
and
cos(α) = √(1 - (3/4)²) = (√7)/4
The distance from the station to the plane is increasing at a rate that is the plane's speed multiplied by the cosine of the angle α. Hence the plane–station distance is increasing at the rate of
(440 mph)×(√7)/4 ≈ 291 mph
Answer:
The answer is the last one
Step-by-step explanation:
Hope this helps
Answer:
7
Step-by-step explanation:
10.5*2/3= 3.5*2=7
A. the discount is 7.5
B. the price is 17.5
C. the tax will be 1.5 on the original price
D. 25+ 1.5=26.5
good luck
