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Mathematics, 10.01.2020 14:31 ewilly01

Cos^-1(-x)=-cos^-1x for -1< x< 1 true or false?


Cos^-1(-x)=-cos^-1x for -1&lt; x&lt; 1 true or false?

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Cos^-1(-x)=-cos^-1x for -1< x< 1 true or false?
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