<h3>
Answer: 116.2°</h3>
Work Shown:

The first equation is one of the three variations for the Law of Cosines.
Make sure your calculator is in degree mode.
Answer: It is vertical
Step-by-step explanation:
<u>Statement</u><u>:</u>
The base of a triangle is 3m and its height is
m.
<u>To </u><u>find </u><u>out:</u>
The area of the triangle.
<u>Solution:</u>
- Given, base = 3m, height =
m - We know,

- Therefore, the area of the triangle

<u>Answer</u><u>:</u>
The area of the triangle is 
Hope you could understand.
If you have any query, feel free to ask.
Answer: 20 over 7 units
Step-by-step explanation: