Height of a Tree A tree casts a shadow of 8.55 feet when the angle of elevation of the sun is Find the height of the tree.

1.7 Linear Independence n - An indexed set of vectors {v ,…,1 } ip R is said to be linearly independent if the vector equation + + ⋯+ = 0 has only the trivial solution. ▯ ▯ ▯ ▯ ▯ ▯ The set {v 1…,v p is said be linearly dependent if their exist weights c 1…,c p not all zero, such that ▯ ▯+ ▯ ▯ ⋯+ =▯ ▯ - + + ⋯+ = 0 à linear dependence relation amount v ,…,v , when ▯ ▯ ▯ ▯ ▯ ▯ 1 p the weights are not all zero Linear Independence of Matrix Columns - The columns of a matrix A are linearly independent if and only