Hi..please help and teach me how to do these problems and please show work so I can learn! Please
1) evaluate if sin a=2/radical5 ; 0<a<pi/2
the problem is sin 2a
#2-3 solve for each equation:
2)2sinx+radical 3 = 0
3)radical2 cos x-1 =0
#4 solve the equation on the time interval...
