How do you evaluate the expression #cotpi#?
1 Answer
Dec 17, 2016
undefined
Explanation:
Using the
#color(blue)"trigonometric identity"#
#color(orange)"Reminder " color(red)(bar(ul(|color(white)(2/2)color(black)(cottheta=(costheta)/(sintheta))color(white)(2/2)|)))#
#rArrcot(pi)=cos(pi)/sin(pi)=(-1)/0#
#"division by zero is undefined, hence " cot(pi)" is undefined"#
