angle Search

Q:

How many triangles are there in the given figure?

A) 14	B) 15
C) 17	D) 18

Answer & Explanation Answer: C) 17

Explanation:

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Filed Under: Image Analysis
Exam Prep: Bank Exams

Q:

The angle of elevation of the top of a tower from a point A on the ground is 30°. On moving a distance of 20 metres towards the foot of the tower to a point B, the angle of elevation increases to 60°. The height of the tower in meters is

A) √3	B) 5√3
C) 10√3	D) 20√3

Answer & Explanation Answer: C) 10√3

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

A point P lying inside a triangle is equidistant from the vertices of the triangle. Then the triangle has P as its

A) Centroid	B) Incentre
C) Orthocentre	D) Circumcentre

Answer & Explanation Answer: D) Circumcentre

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

Q:

G and AD are respectively the centroid and median of the triangle ΔABC.The ratio AG:AD is

A) 3:2	B) 2:3
C) 3:1	D) 1:2

Answer & Explanation Answer: B) 2:3

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

Q:

In spherical polar coordinates (l, q, a), q denotesthe polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by

A) Psinq sina	B) Psinq cosa
C) Pcosq sina	D) Pcosq cosa

Answer & Explanation Answer: A) Psinq sina

Explanation:

The Cartesian Coordinates can be retrieved from spherical coordinates (l,q,a) by:

X = r.sinq.cosa

Y = r.sinq.sina

Z = r.sinq

Using the same we get for P,

Y = P.sinq.sina

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Filed Under: Physics
Exam Prep: Bank Exams

Q:

A tower is broken at a point P above the ground. The top of the tower makes an angle 60° with the ground at Q. From another point R on the opposite sideof Q angle of elevation of point P is 30°. If QR = 180 m, then what is the total height (in metres) of the tower?