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Mathematics
Mathematics
Problem
sin
75
∘
=
?
\sin 75^{\circ}=?
sin
7
5
∘
=
?
a)
2
−
1
2
2
\frac{\sqrt{2}-1}{2 \sqrt{2}}
2
2
2
−
1
b)
3
−
1
2
2
\frac{\sqrt{3}-1}{2 \sqrt{2}}
2
2
3
−
1
c)
3
+
1
2
2
\frac{\sqrt{3}+1}{2 \sqrt{2}}
2
2
3
+
1
d)
2
+
1
2
2
\frac{\sqrt{2}+1}{2 \sqrt{2}}
2
2
2
+
1
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