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A mean observes that when he moves up a ...

A mean observes that when he moves up a distance `c` metres on a slope, the angle of depression of a point on the horizontal plane from the base of the slope is `30^0,` and when he moves up further a distance `c` metres, the angle of depression of that point is `45^0dot` The angle of inclination of the slope with the horizontal is.

A

`60^(@)`

B

`75^(@)`

C

`70^(@)`

D

None

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • A man observes that when he moves up a distance c metres on a slope, the angle of depression of a point on the horizontal plane from the base of the slope is 30^(@) , and when he moves up further a distance c metres the angle of depression of that point is 45^(@) . The angle of inclination of the slope with the horizontal is (Man starts from bottom of slope)

    A
    `60^(@)`
    B
    `45^(@)`
    C
    `75^(@)`
    D
    `30^(@)`

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    A
    `25sqrt(3)m`
    B
    `70sqrt(3)m`
    C
    `(70sqrt(3))/(3)`m
    D
    70 m

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    A
    70 m
    B
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    C
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    D
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