Question

Hello people ~
Sketch the graph for y=cot ^-1 (cot x)
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Answer 1

`\sf y=cot^(-1)(cot(x))`

`\sf \implies cot(y)=cot(x)`

`\sf \implies (1)/(tan(y))=(1)/(tan(x))`

`\sf \implies tan(x)=tan(y)`

`\sf \implies y=x`

`\sf \implies y=x\pm\pi n`