tan 82° = x / 4250

(tan 82°) * 4250 = x

x ≈ **30240.32 ft.** ( I don't know if I interpreted the problem right.)

Second problem:

This is a right triangle problem.

In this case the base of triangle is 12 feet and the hypotenuse is 13 feet.

use pythagorean theorem: a^{2 }+ b^{2 }= c^{2}

12^{2 }+ b^{2 }= 13^{2}

144 + b^{2 }= 169

b^{2 }= 169 - 144

b^{2 }= 25

b = 5 feet.

so, the tree is **5 feet** tall.