関連ワード:  what is the inverse of cot theta    what is the opposite of cot theta    what is the inverse of cot x    what is tan inverse of cot theta    what is the opposite of cot x    what is the range of cot inverse theta    what is tan inverse of cot x    what is the value of tan inverse cot theta    what is the graph of cot inverse of cot x    what is cot the inverse of