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Topic: Slant height of square pyramid
Replies: 1   Last Post: Jan 5, 2008 7:25 AM

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Peter Scales

Posts: 147
From: Australia
Registered: 4/3/05
Re: Slant height of square pyramid
Posted: Jan 5, 2008 7:25 AM
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Guru,

The answer depends on your definitions of base angle and slant height.

If by base angle you mean face angles at the base, and by slant height you mean the slant length measured along the middle of the face, then tan(51.85)deg=h/6inches

So h = 6 x tan(51.85deg) inches.

If by base angle you mean the angle between the face and the base, then cos(51.85deg)=6inches/h

So h = 6 / cos(51.85deg) inches.

Regards, Peter Scales.



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