Solve the right triangle shown in the figure. 
?A = 45°, 
= 14 km, ?C = 90°
A. 
= 7
km, ?B = 45°, 
= 14 km
B. 
= 14
km, ?B = 45°, 
= 14 km
C. 
= 14 km, ?B = 45°, 
= 14
km
D. 
= 14 km, ?B = 45°, 
= 7
km
Answer: C
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, 
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, 
< ? < ?Find cos (? + ?).
A. 
B. - 
C. 
D. - 
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= 6
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