(Study Material) RRB NTPC (Tier -2) Exam (Numerical Aptitude) - Trigonometry

(Study Material) RRB NTPC (Tier -2) Exam (Numerical Aptitude) - Trigonometry

1. 300m from the foot of a cliff on level ground, the angle of elevation of the top a cliff in 30o. Find the height of this cliff.

(a) 173.20 m
(b) 193.20 m
(c) 180.00 m
(d) 183.20 m

2.

(a) 15^o
(b) 30^o
(c) 45^o
(d) 60^o

3. Two poles of equal height stand on either side of a roadway which is 120m wide.

4. The angle of depression of two ships from the top os a lighthouse are 45o and 30o. If the ships are 120 m apart, find the height of the lighthouse.

(a) 40 m
(b) 44 m
(c) 50 m
(d) 60 m

5. The posts are k meters apart and the height of one in double that of the other. If from the middle point of the line joining their feet, and observe finds the angular elevations of their tops to be complementary, then the height (in metres) of the shorter post is ..........

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