<PRE><B>Question 950428</B>
find the exact values of s in the given interval that satisfy the given condition.
 [-2pie,pi)
Comment:: That interval sound like QIV and QIII
--------
cos^2s=3/4
cos(s) = +-sqrt(3)/2
---------------------
Reference angle:: pi/3
----
Ans: -pi/3 ; -(2/3)pi
--------------------
Cheers,
Stan H.
----------------
</PRE>