Answer:
E. x-coordinate of point C
Step-by-step explanation:
Consider the diagram of the unit circle which has been drawn and attached.
Using a calculator in radians, 
On the unit circle, out of points A, B and C, the point -1 is at point C.
Point C is located at (-1,0).
Therefore, 
is the x-coordinate of point C.
The correct option is E.
Answer:
Step-by-step explanation:
31:12 + ratio
Answer:
1. C and D
line and point
2. D
The statement is false. A conjecture is proven through deductive reasoning
3. A
14/(-3)=-112
4. B and C
17*0=017*0=0
5*(-4)=-20
5. B
1
6. 1. Given, 2. Distributive Property of Equality 3. Addition Property of Equality 4. Division Property of Equality
7. A
3
8. A
Parallelograms have two pairs of equal angle measurements. For instance, Parallelogram 1 has angle pairs measuring 80°80° and 100°100°.
9. B
The statement is false. If a flowchart proof is difficult to construct, then a two-column proof should be used.
10. B
A long-term goal when writing a proof would be to prove a statement. A short-term goal would be to apply a postulate or theorem that helps to prove the statement.
11. C and B
1 and 4
2 and 3
12. B
Yes, L and V are vertical angles.
13. 39
14. B
Only Amy proved the theorem because she used postulates and theorems to construct a logical argument to show that the interior angles in a triangle add up to 180°180°.
15. C and D
a and c
16. 37
17. 65
Step-by-step explanation:
1.25 = 125/100 = 5/4 ( in standard form).
Solution= x=5
Alernative form= 21 x - 105= 0<span />
