Find the exact value or state that the expression is undefined, $$ \cos ^{-1}(-7)=\square $$ Unidotined

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The expression is undefined. The expression $$\cos^{-1}(-7)$$ is undefined because the range of the inverse cosine function, $$\cos^{-1}(x)$$, is limited to values of $$x$$ in the interval $$[-1, 1]$$. Since $$-7$$ is outside this interval, the expression does not yield a valid result. Thus, the answer is: $$ \text{undefined} $$

Find the exact value or state that the expression is undefined, \[ \cos ^{-1}(-7)=\square \] Unidotined

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Find the exact value or state that the expression is undefined, \[ \cos ^{-1}(-7)=\square \] Unidotined

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