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Mathematics
Mathematics
Problem
If
cos
A
=
3
2
\cos A = \frac{\sqrt{3}}{2}
cos
A
=
2
3
,
0
∘
<
A
<
90
∘
0^\circ < A < 90^\circ
0
∘
<
A
<
9
0
∘
, then
A
A
A
is equal to: a)
30
∘
30^\circ
3
0
∘
b) 1 c)
3
2
\frac{\sqrt{3}}{2}
2
3
d)
60
∘
60^\circ
6
0
∘
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