Answer:

Step-by-step explanation:
Given: 
We have to find the value of 
Since Given 
Using trigonometric identity,

Thus, for
comparing , we have,

We get,

Thus, 
Answer:
0,1,2,3
Step-by-step explanation:
If you make them have the same denominator the fractions would be
12/15 - 5/15=
this equals 7/15 and you can't simplify it.