Answer: a
Step-by-step explanation: its getting rid of water and the original is 40
Answer:

Step-by-step explanation:
Given: 
To find: angle to the nearest degree
Solution:
A triangle is a polygon that has three sides, three angles ,and three vertices.
Trigonometry explains the relationship between the sides and angles of the triangle.
The angle can be expressed in two forms: degrees or radians.

Are you asking how to solve this equation?
Answer:
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Step-by-step explanation:
Yi forgot two factors of 63, which are 3 and 21.
This would make the greatest common factor 21.