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Key Quiz 2.3
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1
If x = cos 17o find the value of x to four decimal places.
A)x = 0.1700
B)x = 0.2924
C)x = 0.3057
D)x = 0.9563
2
Find the measure of angle A to the nearest degree if sin A = 0.4067.
A)22o
B)24o
C)41o
D)66o
3
Find the value of x to the nearest tenth of a foot in the triangle shown:
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A)7.5 ft
B)8.9 ft
C)12.0 ft
D)28.7 ft
4
Find the measure of angle S in the triangle shown to the nearest degree.
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A)25o
B)42o
C)65o
D)67o
5
A safety ladder is 15 m long. The instructions that come with the ladder say that the maximum angle it can safely make with the ground is 65o. What is the maximum height (to the nearest tenth of a metre) the ladder can reach safely?

A)32.2 m
B)15 m
C)13.6 m
D)6.3 m







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