Y2-y1/x2-x1 then plug in numbers so 6-2/10-1 which gives 4/9
Answer: 10 ft
Explanation
As two right triangles (a triangle with a 90º angle) are formed, to know the distance between AB we have to calculate BC, AC and subtract.
0. Calculating BC
We have a 30º angle and an adjacent side 5√3ft (as the hypotenuse is the side opposite to the 90º angle). Thus, using the tangent function where:

we can find the opposite side, which is BC. Replacing the values and simplifying we get:



Thus, the segment BC measures 5ft.
<em>2. Calculating segment AC</em>.
In this case, our hypotenuse changes. However, we are still looking for the opposite side. Using the tangent function as before we get:


<em>3. Calculating the distance between A and B</em>
Answer:
The second answer is the correct answer and the explanation in the attachment
Solution
The question would like us to evaluate the following:

- The solution is given below:

Final Answer
The answer is -3
Answer:
x=25°, y=10°
Step-by-step explanation:
∠A+∠B=180°
8y+10y=180°
18y=180°
y=10°
∠B+∠C=180°
10y+4x-20°=180°
10*10°+4x=180°+20° (y=10°)
100°+4x=200°
4x=200°-100°
4x=100°
x=25°