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Problem
Problem
Evaluate
sin
−
1
(
4
5
)
+
sin
−
1
(
5
13
)
+
sin
−
1
(
16
65
)
\sin^{-1}\left(\frac{4}{5}\right) + \sin^{-1}\left(\frac{5}{13}\right) + \sin^{-1}\left(\frac{16}{65}\right)
sin
−
1
(
5
4
)
+
sin
−
1
(
13
5
)
+
sin
−
1
(
65
16
)
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