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6 May, 13:34

In one area, the lowest angle of elevation of the sun in winter is 23 ° 18 '. Find the minimum distance, x, that a plant needing full sun can be placed from a fence 4.63 ft high.

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  1. 6 May, 14:00
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    A plant needing full sun can be placed from a fence 4.63 ft high at a distance of 10.75 meter if the lowest angle of elevation of the sun in winter is 23 ° 18 '.

    Explanation:

    The given figure shows the arrangement of sun, 4.63 ft high and plant needing full sun.

    By using trigonometric result, tan θ = Opposite side/Adjacent side.

    Substituting

    tan (23 ° 18 ') = 4.63 ft/x

    x = 4.63 ft / tan (23 ° 18 ') = 10.75 m

    So that a plant needing full sun can be placed from a fence 4.63 ft high at a distance of 10.75 meter.
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