sina=12/13
sin^2a=144/169
cos^2a=1-144/169=25/169
cosa=5/13
tga=12/5=2,4
a) cos^a=64/100 sina=6/10 tga=6/8=3/4
b) cos^a=1/4 sin^a=3/4 sina=sqrt(3)/2 tga=sqrt(3)
sina=12/13
sin^2a=144/169
cos^2a=1-144/169=25/169
cosa=5/13
tga=12/5=2,4
a) cos^a=64/100 sina=6/10 tga=6/8=3/4
b) cos^a=1/4 sin^a=3/4 sina=sqrt(3)/2 tga=sqrt(3)