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    Re: Orthodontic treatments for former UK Prime Minister in Lincolnshire Village (11-5)
    From: David Pike
    Date: 2022 Mar 8, 13:56 -0800

    Tony Oz you said:  my point is that the tan (or cotan) table is not enough, it is more tricky on an inclined surrface.

    Even if you know that your pace is 47 centimeters on a 12° slope (upwards) and the shadow is 21,5 paces long, - you will have to solve a more complicated problem than the multiplication of two numbers (to get the height of an object casting that shadow).

    Tony

    I don’t believe I mentioned a tan table.  When you get to 78, you realise that navigation is nothing if you don't make it fun take advantage of every opportunity offered.  In this case a sharp shadow and a Sun's altitude of 30°.

    I approached the problem by saying Perp=Base x Tan altitude.  However, altitude 30°, and from pilot nav, Tan30=1/ 3 0.6.  Therefore, height of tower (34/66) x 100 x 0.6 34/1.1 31m.  It’s just a way of entertaining those unwise enough to go walking with you. DaveP

       
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