sinx+cosx=1/5
sin^x+cos^x=1
2sinxcosx=1/25-1=-24/25
(sin^x+cos^x)/sinxcosx
=tanx+cotx=-25/12
tan^x+25/12tanx+1=0
(tanx+3/4)(tanx+4/3)=0
tanx=-3/4或tanx=-4/3;
0
sinx+cosx=1/5
sin^x+cos^x=1
2sinxcosx=1/25-1=-24/25
(sin^x+cos^x)/sinxcosx
=tanx+cotx=-25/12
tan^x+25/12tanx+1=0
(tanx+3/4)(tanx+4/3)=0
tanx=-3/4或tanx=-4/3;
0