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You are observing top of your school bui...

You are observing top of your school building at an angle of elevation a from a point which is at d meter distance from foot of the building
Which trigonometric ratio would you like to consider to find the height of the building?

Answer

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The angle of elevation of the top of a building from the foot of the tower is 30^(@) and the angle of elevation of the top of the tower from the foot of the building is 60^(@) . If the tower is 30 m high, find the height of the building.

Knowledge Check

  • If the angles of elevation of a tower from two points distance a and b (agtb) from its foot and in the same straight line from it are 30^@ and 60^@ , then the height of the towers

    A
    `sqrtab`
    B
    `sqrta+b`
    C
    `sqrta-b`
    D
    `sqrt(a/b`

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