[No Calculator] A tree casts a shadow approxiamtely 24 feet long when the sun's rays form a 30o angle with the earth. How tall is the tree?
We can use the tangent here
tan 30 = H / 24 where H is the tree height
1/ √ 3 = H / 24 multiply each side by 24
24/√ 3 ft = H ≈ 13.86 ft
+895 
