The angle of elevation of an aircraft from a point K on the ...
The angle of elevation of an aircraft from a point K on the horizontal ground 30\(\alpha\). If the aircraft is 800m above the ground, how far is it from K?
A.
400.00m
B.
692.82m
C.
923.76m
D.
1,600.99m
Correct answer is D
In \(\bigtriangleup\)KBC, sin 30 = \(\frac{800}{IKCI}\)
IKCL = \(\frac{800}{sin30^o}\)
= \(\frac{800}{0.5}\)
= 1600m
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