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Mathematics
Mathematics
Problem
Calculate
sin
(
90
∘
−
30
∘
)
\sin(90^{\circ}-30^{\circ})
sin
(
9
0
∘
−
3
0
∘
)
. a)
2
2
\dfrac{\sqrt2}{2}
2
2
b)
3
2
\dfrac{\sqrt3}{2}
2
3
c)
1
2
\dfrac{1}{2}
2
1
d)
1
3
\dfrac{1}{\sqrt3}
3
1
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