At point B, the slope of the blue curve is (Hint: Calculating the slope, pay extra attention to the units of analysis.) which means that the plane is at a rate of feet per minute.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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The blue curve on the following graph shows the height of an airplane over 10 minutes of flight. The two black lines are tangent to the curve at the
points indicated by A and B.
ALTITUDE (Thousands of feet)
40
35
30
25
20
15
10
5
0
0
1
2
+
3
4, 30
A
4
5
TIME (Minutes)
6
7
8
B
9
The slope of the blue curve measures the plane's rate of descent
is thousands of feet per minute
10
The unit of measurement for the slope of the curve
At point A, the slope of the curve is -2,500, which means that the plane is descending
Calculating the slope, pay extra attention to the units of analysis.)
At point B, the slope of the blue curve is
, which means that the plane is
(Hint: Calculating the slope, pay extra attention to the units of analysis.)
at a rate of 2,500
at a rate of
feet per minute. (Hint:
feet per minute.
Transcribed Image Text:The blue curve on the following graph shows the height of an airplane over 10 minutes of flight. The two black lines are tangent to the curve at the points indicated by A and B. ALTITUDE (Thousands of feet) 40 35 30 25 20 15 10 5 0 0 1 2 + 3 4, 30 A 4 5 TIME (Minutes) 6 7 8 B 9 The slope of the blue curve measures the plane's rate of descent is thousands of feet per minute 10 The unit of measurement for the slope of the curve At point A, the slope of the curve is -2,500, which means that the plane is descending Calculating the slope, pay extra attention to the units of analysis.) At point B, the slope of the blue curve is , which means that the plane is (Hint: Calculating the slope, pay extra attention to the units of analysis.) at a rate of 2,500 at a rate of feet per minute. (Hint: feet per minute.
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