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sin α / 3 +2 =1/6 +4 sin α
-3 2/3 sin α = -1 5/6
11/3 sin α = 11/6 /× 3/11
sin α = 1/2
α = 30⁰
Ad b)
√2 sin α - 1 = 0
√2 sin α = 1 /÷√2
sin α = 1 / √2
sin α = √2 / 2
α = 45⁰
Ad c)
3 tg α + 5 = 8 tg α
5 = 5 tg α /÷5
tg α = 1
α = 45⁰
Ad d)
2√3 cos α - 3 = 0
2√3 cos α = 3 /÷2√3
cos α = 3 / 2√3
cos α = 3√3 / 2*3
cos α = √3 / 2
α = 30⁰
2sinα +12 = 1 + 24 sinα
2sin α -24 sin α = 1-12
-22 sin α = -11 /:(-22)
sin α = (-11):(-22)
sin α = 1/2
α = 30 stopni
b.)√2sinα - 1=0
√2sinα = 1 /:( √2)
sin α = (1 : √2 )
sin α = (1 : √2 )*(√2:√2) - usuwam niewymierność mianownika
sin α = √2:2
α = 45 stopni
c.)3tgα + 5=8tgα
3tgα - 8tgα = -5
-5tgα = -5 /: (-5)
tg α = 1
α = 45 stopni
d.)2√3 cosα - 3=0
2√3 cosα = 3 /: 2√3
cos α = 3 : 2√3
cos α = (3 : 2√3)*(√3:√3) usuwam niewymierność mianownika
cos α = 3√3 : 2*3
cos α = √3 : 2
α = 30 stopni