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Mathematics
Mathematics
Problem
Show that
tan
75
∘
−
tan
30
∘
−
tan
75
∘
tan
30
∘
=
1
\tan 75^\circ - \tan 30^\circ - \tan 75^\circ \tan 30^\circ = 1
tan
7
5
∘
−
tan
3
0
∘
−
tan
7
5
∘
tan
3
0
∘
=
1
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