wiedzac ze dla pewnego kata ostrego alfa , tanges alfa to cztery piate , oblicz :
ctg alfa ,cos alfa, sin alfa
ctg = 5/4
cos=ctg/tg=5/4*4/5 =25/16
sin=tg/ctg = 16/25
tg=4/5
ctg=1/tg=5/4
(sin/cos)=tg
4/5=sin/cos
4cos=5sun
cos=(5/4)sin
sin^2+cos^2=1
sin^2+((5/4)sin)^2=1
sin^2+(25/16)sin^2=1
41/16sin^2=1
sin^2=16/41
sin=4/pierw z 41=4pierw z 41/41
cos=(5/4)*4pierw z 41/41=5pierw z 41/41
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
ctg = 5/4
cos=ctg/tg=5/4*4/5 =25/16
sin=tg/ctg = 16/25
tg=4/5
ctg=1/tg=5/4
(sin/cos)=tg
4/5=sin/cos
4cos=5sun
cos=(5/4)sin
sin^2+cos^2=1
sin^2+((5/4)sin)^2=1
sin^2+(25/16)sin^2=1
41/16sin^2=1
sin^2=16/41
sin=4/pierw z 41=4pierw z 41/41
cos=(5/4)*4pierw z 41/41=5pierw z 41/41