załącznik
ctgα= y/x=3/4
z pitagorasa:
y²+x²=z²
3²+4²=z²
9+16=z²
z=√25=5
sinα=x/z=4/5
cosα =y/z=3/5
sinα+cosα=4/5 +3/5 =7/5=1,4
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załącznik
ctgα= y/x=3/4
z pitagorasa:
y²+x²=z²
3²+4²=z²
9+16=z²
z=√25=5
sinα=x/z=4/5
cosα =y/z=3/5
sinα+cosα=4/5 +3/5 =7/5=1,4