Eenheidscirkel en radialen
Bereken. Rond zo nodig af op 2 decimalen.
1p
\(\cos(-\frac{1}{4})\)
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\(\cos(-\frac{1}{4}) = 0{,}96891... ≈ 0{,}97\)
1p
Bereken. Rond zo nodig af op 2 decimalen.
1p
\(\cos(-1\frac{5}{6} \pi )\)
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\(\cos(-1\frac{5}{6} \pi ) = \frac{1}{2} \sqrt{3}\)
1p
Reken om. Rond zo nodig af op 2 decimalen.
1p
\(212\degree = \text{......} \text{ } \text{rad}\)
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\(212\degree = {212 \over 180} ⋅ \pi ≈ 3{,}70 \text{ } \text{rad}\)
1p
Reken om. Rond zo nodig af op 2 decimalen.
1p
\(600\degree = \text{......} \text{ } \text{rad}\)
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\(600\degree = {600 \over 180} ⋅ \pi = 3\frac{1}{3} \pi \text{ } \text{rad}\)
1p
Bereken. Rond zo nodig af op 2 decimalen.
1p
\(\sin(x) = -0{,}13\)
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\(x = \sin^{-1}(-0{,}13) = -0{,}13036... ≈ -0{,}13\)
1p
Bereken op \([0 , 2 \pi ] \text{.}\) Rond zo nodig af op 2 decimalen.
1p
\(\sin(x) = 0\)
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\(x = 0 ∨ x = \pi \)
1p
Reken om. Rond zo nodig af op 2 decimalen.
1p
\(2\frac{1}{4} \text{ } \text{rad} = \text{......} \text{ } \text{graden}\)
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\(2\frac{1}{4} \text{ } \text{rad} = {2\frac{1}{4} \over \pi } ⋅ 180 ≈ 128{,}92\degree\)
1p
Reken om. Rond zo nodig af op 2 decimalen.
1p
\(\frac{5}{6} \pi \text{ } \text{rad} = \text{......} \text{ } \text{graden}\)
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\(\frac{5}{6} \pi \text{ } \text{rad} = {\frac{5}{6} \pi \over \pi } ⋅ 180 = 150\degree\)
1p