Review the graph.

Which expression is undefined?
What is the range of y = sin-1x?

What is the domain of y = cos-1x?

Which statement is true about y = arctanx?

Which graph represents y = tan-1x?




The water level at a pier is modeled by the function , where y represents the water level measured in meters, and x represents the number of hours since the last high tide. After how many hours is the water first expected to reach a depth of 12 meters? Round to the nearest tenth of an hour.

What is the value of ?





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