Answer:
-12
Step-by-step explanation:
We start with the equation: 
Substitute the variables: 
Solve using order of operations (start with multiplication): 
And then addition/subtration: 
Answer:
66
Step-by-step explanation:
Answer:
<h3>20.6 ft</h3>
Step-by-step explanation:
You must use the trigonometric function.
In this case, it will be tangent.

We have


Substitute:

<em>multiply both sides by 20</em>

Tree height is r + 5.
Therefore

The HL theorem is a special case of the SSS postulate.
Answer/Step-by-step explanation:
The angle CPA must be 90° because AB is a straight line and it is a measure of 180° and 180°-90° = 90°