Home
Class 12
MATHS
The angle of elevation of the top of a T...

The angle of elevation of the top of a T.V. tower from three points A,B,C in a straight line in the horizontal plane through the foot of the tower are `alpha, 2alpha, 3alpha` respectively. If AB=a, the height of the tower is

A

`a tan alpha`

B

`asinalpha`

C

`asin2alpha`

D

`asin3alpha`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • HEIGHTS AND DISTANCES

    ML KHANNA|Exercise Problem Set (1) TRUE AND FALSE|11 Videos

  • HEIGHTS AND DISTANCES

    ML KHANNA|Exercise Problem Set (1) FILL IN THE BLANKS|21 Videos

  • FUNCTIONS

    ML KHANNA|Exercise SELF ASSESSMENT TEST |10 Videos

  • INEQUALITIES

    ML KHANNA|Exercise PROBLEM SET (1)(FILL IN THE BLANKS)|4 Videos

Similar Questions

Explore conceptually related problems

The angles of elevation of the top of a TV tower from three points A,B and C in a straight line (in thehorizontal plane) through the foot of tower are alpha,2 alpha and 3 alpha respectively.If AB=a, the height of tower is

The angle of elevation of the top of a tower from two points A and B lying on the horizontal through the foot of the tower are respectively 15^(@)and30^(@) .If A and B are on the same side of the tower and AB = 48 metre , then the height of the tower is :

The angle of elevation of the top of a tower from a point 40 m away from its foot is 60^(@) . Find the height of the tower.

The angle of elevation of the top of a tower standing on a horizontal plane from two points on a line passing through the foot of the tower at a distance x and y respectively are complementary angles. Find the height of the tower.

The angle of elevation of the top of a tower standing on a horizontal plane from two on a line passing through the foot of the tower at a distance 9 ft and 16 ft respectively are complementary angles. Then the height of the tower is:

If the angles of elevation of the top of tower from three collinear points A , B and C , on a line leading to the foot of the tower, are 30^(@) , 45^(@) and 60^(@) respectively, then the ratio , AB : BC is

The angle of elevation of the top of a tower standing on a horizontal plane from two points on a line passing through the foot of the tower at a distance 9 ft and 16 ft. respectively are complementary angles. The height of the tower is