Which shows all the exact solutions of 2sec²x-tan4x=-1? Give your answer in radians.
100 + kr and 20
k*
²5+ Kx
+2kx and 5+2kx
7x
+2kx, 3+2kx 5+2kx, and +2kx
5x
o+k+k+Kx, and kr
3