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Aman observes that the angle of elevatio...

Aman observes that the angle of elevation of the top of a tower from a point P on the ground is `alpha`.He moves a certain distance towards the foot of the tower and finds that the age of elevation of the top has doubled. He further moves a distance`3/4` of the previous and finds that the ele of elevation is three times that all. The angle is given by :

A

`sin alpha =3/4`

B

`sin alpha = 3/8`

C

`sin alpha = sqrt ((5)/(12))`

D

`cos alpha = sqrt((5)/(12)).`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • The angle of elevation of the top of a tower from a point of the ground, which is 30 m away from the foot of a tower of height 10sqrt3 , is:

    A
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    B
    `60^(@)`
    C
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    `45^(@)`
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    `90^(@)`
    D
    `60^(@)`

  • In the given fig, the angle of elevation theta is

    A
    `30^(@)`
    B
    `45^(@)`
    C
    `90^(@)`
    D
    `60^(@)`

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