Work out height of object from shadow instantly with clear inputs, formula shown and shareable results.
The object, its shadow and the sun's ray form a right triangle in which the elevation angle sits at the shadow tip. So height = shadow × tan(elevation), the method Thales reportedly used on the Great Pyramid.
Height from shadow
h = shadow length × tan(sun elevation)
12 × tan 35° ≈ 8.402 m tall.
As the elevation angle drops toward zero, tan of it approaches zero, so the shadow needed to reach the same height grows without bound.