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:
cant help ya but if you go to math_way they help with all sorts of stuff like this
Step-by-step explanation:
sorry!
if x^2=40 you would need to square root both sides to get x alone therefore x=6.3
the answer is C. Reflection across the X-axis
Hope this helps!
