2014 December(72G) Math Question 48

Trigonometry

- Pythagorean Theorem & sin cos tan

48. The figure below shows a lighthouse keeper looking down at a rowboat on the sea through a navigational instrument. The instrument is 60 feet above sea level and indicates an angle of depression of 53° to the rowboat. Which of the following is closest to the horizontal distance, in feet, between the navigational instrument and the rowboat? (Note: sin 53°=0.80, cos 53°=0.60, tan 53°=1.33)

Choice G

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