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Mathematics
Mathematics
Problem
For
x
∈
[
−
1
,
1
]
x\in[-1,1]
x
∈
[
−
1
,
1
]
,
sin
(
arccos
x
)
\sin\bigl(\arccos x\bigr)
sin
(
arccos
x
)
equals a)
−
1
−
x
2
-\sqrt{1-x^{2}}
−
1
−
x
2
b)
x
x
x
c)
1
−
x
2
\sqrt{1-x^{2}}
1
−
x
2
d)
1
−
x
2
1-x^{2}
1
−
x
2
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