A helicopter is on a path directly overhead line A B when it is simultaneously observed from locations A and B separated by 900 ft . The angle of elevation from A is 42 ° 30 ' and the angle of elevation from B is 30 ° 12 ' . a. What is the distance from each location to the helicopter? Round to the nearest foot. b. How high is the helicopter from the ground at the moment of observation? Round to the nearest foot.
A helicopter is on a path directly overhead line A B when it is simultaneously observed from locations A and B separated by 900 ft . The angle of elevation from A is 42 ° 30 ' and the angle of elevation from B is 30 ° 12 ' . a. What is the distance from each location to the helicopter? Round to the nearest foot. b. How high is the helicopter from the ground at the moment of observation? Round to the nearest foot.
Solution Summary: The author calculates the distances from the locations A and B to the helicopter, using the unit conversion factor (1°60
A helicopter is on a path directly overhead line
A
B
when it is simultaneously observed from locations
A
and
B
separated by
900
ft
. The angle of elevation from
A
is
42
°
30
'
and the angle of elevation from
B
is
30
°
12
'
.
a. What is the distance from each location to the helicopter? Round to the nearest foot.
b. How high is the helicopter from the ground at the moment of observation? Round to the nearest foot.
Consider the following system of equations, Ax=b :
x+2y+3z - w = 2
2x4z2w = 3
-x+6y+17z7w = 0
-9x-2y+13z7w = -14
a. Find the solution to the system. Write it as a parametric equation. You can use a
computer to do the row reduction.
b. What is a geometric description of the solution? Explain how you know.
c. Write the solution in vector form?
d. What is the solution to the homogeneous system, Ax=0?
2. Find a matrix A with the following qualities
a. A is 3 x 3.
b. The matrix A is not lower triangular and is not upper triangular.
c. At least one value in each row is not a 1, 2,-1, -2, or 0
d. A is invertible.
Find the exact area inside r=2sin(2\theta ) and outside r=\sqrt(3)
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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