Jeśli alfa jest kątem ostrym i 3-2cosafla/2 = 1 to alfa wynosi?
-2cosα/2= -2/:(-2)
cosα/2=1
α/2=0+2kπ /*2
α=4kπ k∈C
jesli to jest
(3-2cosα)/2=1 /*2
3-2cosα=2
-2cosα=-1/:(-2)
cosα=1/2
α=60⁰
3-2cosα/2=1
-2cosα=-1
2cosα=1
cosα=0,5
cos60°=0,5
α=60°
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-2cosα/2= -2/:(-2)
cosα/2=1
α/2=0+2kπ /*2
α=4kπ k∈C
jesli to jest
(3-2cosα)/2=1 /*2
3-2cosα=2
-2cosα=-1/:(-2)
cosα=1/2
α=60⁰
3-2cosα/2=1
3-2cosα=2
-2cosα=-1
2cosα=1
cosα=0,5
cos60°=0,5
α=60°