<PRE><B>Question 960440</B>
Someone please help me with this. 
Find the reference number of each value of t
-------------------
Comment::
The given angle has a terminal side.
That side makes an acute angle with the closest
portion of the x-axis.
That acute angle is the reference angle.
-----------------------------------
1- t= 8pi/9
That angle is (1/9)pi above the negative x-axis
Ans: (1/9)pi
--------------------------- 
2- t= 10pi/9
That angle is (1 1/9)pi; it is (1/9)pi below the negative x-axis
Ans: (1/9)pi
--------------------------- 
3- t= 11pi/3
That angle is (3 2/3)pi; it is (1/3)pi below the positive x-axis.
Ans: (1/3)pi
-------------------------- 
4- t= -5pi/4
That angle is (-1 1/4)pi; it is (1/4)pi above the negative x-axis.
Ans: (1/4)pi
----------------------
Cheers,
Stan H.
--------------------------</PRE>