If sinx=35,x\displaystyle {\sin{{x}}}=-\frac{{3}}{{5}},{x} in quadrant III, then
sin2x=\displaystyle {\sin{{2}}}{x}=   ;
cos2x=\displaystyle {\cos{{2}}}{x}=   ;
tan2x=\displaystyle {\tan{{2}}}{x}=   .