IDNLearn.com makes it easy to get reliable answers from experts and enthusiasts alike. Discover in-depth and trustworthy answers from our extensive network of knowledgeable professionals.
c^2-b^2=a^2
if you're given the shadow of the tree and an angle you can find C, square it, then subtract the length of the shadow (squared) from the C^2, then take the square root of A.
I think. that's how I would do it...