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Q:

From a point, 40 m apart from the foot of a tower, the angle of elevation of its top is 60°. The height of the tower is

A) 40√3 km B) 40√3 cm
C) 40√3 m D) 40√2 m

Answer:   C) 40√3 m



Explanation:
Q:

4*(-­0.1(5.5 + 8.5)) of 0.5 = ?

A) -2.8 B) -1.68
C) -1.28 D) -0.84
 
Answer & Explanation Answer: A) -2.8

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0 40
Q:

What will be the equation of the perpendicular bisector of segment joining the points (5,­3) and (0,2)?

A) x + y = 2 B) x -­ y = ­-3
C) x + y = ­2 D) x ­- y = 3
 
Answer & Explanation Answer: D) x ­- y = 3

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Q:

What is the distance between the points (4,7) and (­1,­5)?

A) 10 units B) 13 units
C) 5 units D) 11 units
 
Answer & Explanation Answer: B) 13 units

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Q:

Chords PQ and RS of a circle extended externally intersect at point T. Length of the segment PT, if lengths of QT, RT and ST are 9 cm, 18 cm and 6 cm respectively, is

A) 18 cm B) 12 cm
C) 16 cm D) 8 cm
 
Answer & Explanation Answer: B) 12 cm

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0 41
Q:

What is the measure of an interior angle of a regular Octagon?

A) 135° B) 120°
C) 140° D) 144°
 
Answer & Explanation Answer: A) 135°

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0 38
Q:

If cos(A-B) - cos(A+B) = x, then the value of x is

A) 2sinAsinB B) 2cosAcosB
C) 2cosAsinB D) 2sinAcosB
 
Answer & Explanation Answer: A) 2sinAsinB

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Q:

The slope of the line passing through the points (-5,1) and (x,-4) is -5/8. Find x.

A) 4 B) 3
C) 2 D) -1
 
Answer & Explanation Answer: B) 3

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Q:

If 4x - 5y = -37 and 7x + y = -16, then x - y = ______

A) -8 B) 8
C) 2 D) -2
 
Answer & Explanation Answer: A) -8

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