-720+2(360)=0
sin 0=0
cos 0=1
tan 0=0
csc 0=1/0
sec 0=1
cot 0=1/0
Answer:
1. 21
2. -4
3. 20
4. 1
5. 4
6. -6
Step-by-step explanation:
54
yes , This is an example of the associative property.