drabina nachylona do podłoża pod katem 60° i oddalona od ściany o 6dm. Jaka jest długość drabiny?
cos60* = 6 / x
1 / 2 = 6 / x
1 * x = 2 * 6
x = 12dm ------- odpwoiedx
6/x=cos60⁰
6/x=1/2
x=6*2=12 dm 1,2 m
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cos60* = 6 / x
1 / 2 = 6 / x
1 * x = 2 * 6
x = 12dm ------- odpwoiedx
6/x=cos60⁰
6/x=1/2
x=6*2=12 dm 1,2 m