Question

At which value will the graph of y=cotx have a zero?
pi/2
pi/3
pi/4
none

Answer 1

can you think of where tangent is undefined?

Answer 2

0?

Answer 3

\[\cot x = \frac{\cos x}{\sin x}\]Where does \(\cos x=0\)?

Answer 4

no idea @whpalmer4

Answer 5

Get out your unit circle diagram and look at it...

Answer 6

http://www.embeddedmath.com/downloads/files/unitcircle/unitcircle-letter.pdf

Answer 7

Make yourself some flashcards and start learning those values.

Answer 8

is pi/2 the answer @whpalmer4

Answer 9

If \(\cos \frac{\pi}{2} = 0\) then it is the correct answer.

Answer 10

(yes)