przekształć żeby obliczyć x :
200:x = cos 15
200:x = cos 15/*x
200=x*cos15/:cos15
200/cos15=x
x=200/cos15
200:x=15/200
x=0,075
Chyba tak.
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200:x = cos 15/*x
200=x*cos15/:cos15
200/cos15=x
x=200/cos15
200:x=15/200
x=0,075
Chyba tak.