Trees are tall. Humans, relatively speaking, are not. And we're not the most agile climbers in the animal kingdom, either. But we are crafty, and we can out-think even the most wizened redwood. But ...
A math brain teaser that's probably easy for all of you, but which has stumped me for a while. How do they know how tall the pyramids are? I know you can use tangent to determine height **if you know ...
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