280 your welcome good luck
See attached picture with the answer
Answer:

Step-by-step explanation:
The reference angle is an acute angle that angle in standard position makes with the positive x-axis.
The given angle in radians is

This angle is already acute and hence it is itself a reference angle.
The reference angle of any angle in the first quadrant is the same angle.
Answer:
6n +7
Step-by-step explanation:
You cannot solve since this is an expression, you can only simplify
-2(-3-3n)+1
Distribute the -2
-2*-3 -2*-3n +1
6 +6n +1
Combine like terms
6n +7