Answer: 16.91°
Step-by-step explanation:
1. You can draw a right triangle as you can see in the figure attached.
2. Then you can calculate the angle of elevation (α) as following:

Where:

3. Now you must substitute these values. Then, the angle of elevation is:


Divide both sides by 5 , so 5(x + 5)/5 < 85/5 , which will give you <span>x + 5 < 17 , then minus 5 from both sides which will give you x < 12 . hope this helps !</span>
Answer:
1.a measure, quantity, or frequency, typically one measured against another quantity or measure.
Step-by-step explanation:
2.a fixed price paid or charged for something.
If i'm mistaken; he needs to buy 3 sheets?