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Mathematics
Mathematics
Problem
Given that
sin
35
∘
=
0.574
\sin 35^\circ = 0.574
sin
3
5
∘
=
0.574
, what is the value of
cos
55
∘
\cos 55^\circ
cos
5
5
∘
correct to three decimal places? a)
0.819
0.819
0.819
b)
0.707
0.707
0.707
c)
0.574
0.574
0.574
d)
0.426
0.426
0.426
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