Problem : What is arccos() ?+2nΠ, +2nΠ , where n is an integer.
Problem : What is arcsin(0)nΠ , where n is an integer.
Problem : What is arccos() ?There is no solution, because there exists no angle whose cosine > 1 .
Problem : Why aren't the inverse relations functions?The inverse relations aren't functions because they don't assign a specific output to each input.
Problem : What are the domains of arcsine, arccosine, and arctangent?The domains of arcsine and arccosine are [- 1, 1] . The domain of arctangent is all real numbers. Note: Although they aren't functions, the term domain can be used to describe the possible inputs of the relations.
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