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Mathematics
Mathematics
Problem
Calculate the value of
cos
(
90
∘
−
30
∘
)
\cos(90^\circ-30^\circ)
cos
(
9
0
∘
−
3
0
∘
)
. a)
3
2
\dfrac{\sqrt3}{2}
2
3
b)
0
0
0
c)
1
2
\dfrac12
2
1
d)
1
2
\dfrac{1}{\sqrt2}
2
1
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