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Mathematics
Problem
Evaluate
sin
75
∘
cos
15
∘
+
cos
75
∘
sin
15
∘
\sin75^{\circ}\cos15^{\circ}+\cos75^{\circ}\sin15^{\circ}
sin
7
5
∘
cos
1
5
∘
+
cos
7
5
∘
sin
1
5
∘
. a)
3
2
\dfrac{\sqrt3}{2}
2
3
b)
1
2
\dfrac12
2
1
c)
1
1
1
d)
2
2
\dfrac{\sqrt2}{2}
2
2
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