ответ: sin^2 (A) +cos^2( A) =1
cos(A) =√(1-sin^2(А)) =1-9/256=√247/16=0.98
tg=sin(A) /cos(A)=(3/16) /(√247/16) =0.19
cosA=0.98 tgA=0.19
ответ: sin^2 (A) +cos^2( A) =1
cos(A) =√(1-sin^2(А)) =1-9/256=√247/16=0.98
tg=sin(A) /cos(A)=(3/16) /(√247/16) =0.19
cosA=0.98 tgA=0.19