SOLUTION: Hi, does anybody know the value of cot 90º? I think you would have to move counter clockwise from the standard position, but that would put you on top of the positive y-axis. Can a

Algebra ->  Trigonometry-basics -> SOLUTION: Hi, does anybody know the value of cot 90º? I think you would have to move counter clockwise from the standard position, but that would put you on top of the positive y-axis. Can a      Log On


   

Question 144669: Hi, does anybody know the value of cot 90º? I think you would have to move counter clockwise from the standard position, but that would put you on top of the positive y-axis. Can anyone provide the answer and how they got it?
Found 2 solutions by jim_thompson5910, shahid:
Answer by jim_thompson5910(35256) About Me  (Show Source):
Answer by shahid(44) About Me  (Show Source):
You can put this solution on YOUR website!
cot90=0 it can directly be obtained from its trigonometric relation already proved which says that cotx=sin%28x%29%2Fcos%28x%29.so we can get the value of cot90 from this formula.Now
cot90=cos90%2Fsin90
cot90=0%2F1 because cos90=0 and sin90=1
hence we have shown that cot90=0