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Mathematics
Problem
Which of the following statements about
sin
75
∘
\sin 75^{\circ}
sin
7
5
∘
and
cos
15
∘
\cos 15^{\circ}
cos
1
5
∘
is correct? a)
sin
75
∘
>
cos
15
∘
\sin 75^{\circ} > \cos 15^{\circ}
sin
7
5
∘
>
cos
1
5
∘
b)
sin
75
∘
=
cos
15
∘
\sin 75^{\circ} = \cos 15^{\circ}
sin
7
5
∘
=
cos
1
5
∘
c)
sin
75
∘
=
sin
15
∘
\sin 75^{\circ} = \sin 15^{\circ}
sin
7
5
∘
=
sin
1
5
∘
d)
sin
75
∘
+
cos
15
∘
=
1
\sin 75^{\circ} + \cos 15^{\circ} = 1
sin
7
5
∘
+
cos
1
5
∘
=
1
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