sinα=0,6 0<α<90 st
sin²α+cos²α=1 wzor na jedynke trygonometryczna
0,36+cos²α=1
cos²α=1-0,36
cos²α=0,64
cosα=√0,64
cosα=0,8
================
tgα=sinα/cosα
tgα=0,6/0,8
tgα=3/4
===================
ctgα=1/tgα
ctgα=4/3
==========================
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sinα=0,6 0<α<90 st
sin²α+cos²α=1 wzor na jedynke trygonometryczna
0,36+cos²α=1
cos²α=1-0,36
cos²α=0,64
cosα=√0,64
cosα=0,8
================
tgα=sinα/cosα
tgα=0,6/0,8
tgα=3/4
===================
ctgα=1/tgα
ctgα=4/3
==========================