Jesli alfa jest katem ostrym i sin alfa = 1/6 to:
A. alfa < 30⁰
B. 30⁰ < alfa < 45⁰
C. 45⁰ < alfa < 60⁰
D. alfa > 60⁰
wiemy, że:
sin30*=1/2 = 50/100
sin45*=~~1,41/2 ~~ 70/100
sin60*= ~~ 1,73/2 ~~ 87/100
1/6 to ~~17/100
zatem: A. alfa < 30⁰
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wiemy, że:
sin30*=1/2 = 50/100
sin45*=~~1,41/2 ~~ 70/100
sin60*= ~~ 1,73/2 ~~ 87/100
1/6 to ~~17/100
zatem: A. alfa < 30⁰