Answer:
Step-by-step explanation:
(2 - 2.82) ÷ 4 + 3.46
-0.82 ÷ 4 + 3.46
-.0.205 + 3.46
3.255
Im pretty sure this is correct. Correct me if I'm wrong. Hope this helps.
D 20 units
I know this because 7+7=14 and 3+3=6. Then 6+14=20.
Cosine of angle F = adjacent side / hypotenuse
Cosine of angle F = 60/61 Option C
In image 2, we have to find out the adjacent side
adjacent side =√ 41² - 40² = √81 = 9
Cosine of angle X = 9/41
Option C
<h3>Answer:</h3>
- DE is not included, AAS
- DF is included, ASA
<h3>Explanation:</h3>
An angle is identifiede by its vertex. A side is identified by the vertices it lies between. When the vertices are X and Y, the side that lies between (is included) is side XY.
1. The angle vertices are E and F, so the side included between them would be side EF. The named side, DE, is <em>not</em> included.
The postulate naming is pretty straightforward. Each A represents an angle, and each S represents a side. The sequence of letters matches the sequence of the parts of the geometry. Thus AAS refers to a pair of angles with the side being not between them, while ASA refers to a pair of angles with the side between.
When you have two angles and a not-included side, the postulate you must invoke is the AAS postulate.
2. The explanation of 1 pretty much covers it. Side DF is (included) between angles D and F, so the ASA postulate applies.
