Question

PLEASE SHOW WORK OR EXPLAIN

Answer 1

20.6 ft

Explanation:

You must use the trigonometric function.

In this case, it will be tangent.

`tangent=(opposite)/(adjacent)`

We have

`\theta=38^o,\ opposite=r,\ adjacent=20`

`\tan38^\approx0.7813`

Substitute:

`\tan38^o=(r)/(20)`

`(r)/(20)=0.7813` multiply both sides by 20

`r=15.626`

Tree height is r + 5.

Therefore

`r+5=15.626+5=20.626\approx20.6\ ft`