The given equation is Sin2 
- Cos2 = 0
This can be rewritten as 
=0
This means that = 
, etc subject to the condition that x is restricted to the
interval (0, π)
Hence x= 
=
.
*****
The given equation is Sin2 - Cos2 = 0
This can be rewritten as =0
This means that = , etc subject to the condition that x is restricted to the
interval (0, π)
Hence x=
=.
*****