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____12. An airplane approches an airport. At a certain time, the plane is 1,020 m
high and its angle of elevation measured from the aiport is 20.5°. How far is
the plane from the aiport?
A. 1,089 m C. 2,913 m
B. 2,728 m D. 3, 000 m
____13. Using the ∆MAT at the right, what is the length of ̅̅̅̅̅?
A. 2.9 cm C. 4.3 cm
B. 3.5 cm D. 7.7 cm
____14. What is the area of ∆ at the right?
A. 15.8 2
B. 33.2 2
C. 66.4 2
D. 132.7 2
____15. You stand 25 m from the foot of a tree and you observe that the angle of
elevation of the top of the tree is 48 degrees. How tall is the tree?
A. 27.8 m C. 18.6 m
B. 22.5 m D. 16.7 m
