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MCQ - TNPSC JTO

JTO - 540 - Trade - Workshop Calculation Science

540 UNIT 09 Algebra and Trigonometry

65)   

 In a right triangle, if the opposite side is 5 and hypotenuse is 13, what is sinθ? 

A.
B.
C.
D.
66)   

 If a ladder makes an angle of 60° with the floor and its height from the ground is 8 m, the length of the ladder is: 

A.
B.
C.
D.
67)   

 sinθ = √3/2. Then θ = ?

A.
B.
C.
D.
68)   

 cosθ = 1/2. Then θ = ? 

A.
B.
C.
D.
69)   

tanθ = 1. Then θ = ?

A.
B.
C.
D.
70)   

 Which is  not true  ? 

A.
B.
C.
D.
71)   

A ladder 10 m long leans against a wall. If the foot is 6 m away from the wall, what is the height it reaches? 

A.
B.
C.
D.
72)   

A man observes the top of a tower at an angle of elevation 45°, standing 50 m from the base. Find the height of the tower. 

A.
B.
C.
D.
73)   

 A vertical pole 10 m tall casts a shadow 10 m long. The angle of elevation of the sun is: 

A.
B.
C.
D.
74)   

 A building is 20 m tall. The angle of depression from the top of the building to a point on the ground is 30°. Find the distance from the building to the point. 

A.
B.
C.
D.
75)   

 A boy flying a kite lets out 100 m of string which makes an angle of 60° with the ground. Height of the kite is:

A.
B.
C.
D.
76)   

The height of a tower is 40 m. A man at a point on ground observes its top at angle 30°. Distance from man to tower = ? 

A.
B.
C.
D.
77)   

The angle between a ramp and the horizontal is 15°. If the ramp is 10 m long, the vertical height is: 

A.
B.
C.
D.
78)   

A tree 12 m high casts a shadow of 16 m. Find the angle of elevation of the sun. 

A.
B.
C.
D.
79)   

 If angle of elevation of a tower is 60° from a distance of 20 m, height of the tower is: 

A.
B.
C.
D.
80)   

A wire is attached to the top of a vertical pole of height 15 m and makes angle 30° with the ground. Length of the wire is: 

A.
B.
C.
D.