1
NDA Mathematics 16 April 2023
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following for the next two (02) items that follow :
A flagstaff 20 m long standing on a pillar 10 m high subtends an angle tan-1(0.5) at a point P on the ground. Let θ be the angle subtended by the pillar at this point P.
What is a possible value of tan θ ?
2
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
ABC is a triangular plot with AB = 16 m, BC = 10 m and CA = 10 m. A lamp post is situated at the middle point of the side AB. The lamp post subtends an angle 45° at the vertex B.
What is the height of the lamp post ?
3
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
There are two points P and Q due south of a leaning tower, which leans towards north. P is at a distance x and Q is at distance y from the foot of the tower (x > y). The angles of elevation of the top of the tower from P and Q are 15° and 75° respectively.
At what height is the top of the tower above the ground level ?
4
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
There are two points P and Q due south of a leaning tower, which leans towards north. P is at a distance x and Q is at distance y from the foot of the tower (x > y). The angles of elevation of the top of the tower from P and Q are 15° and 75° respectively.
If θ is the inclination of the tower to the horizontal, then what is cot θ equal to ?
Questions Asked from Height and Distance (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
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Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
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