Question

what is the cot 90

Answer 1

cot(x) = cos(x)/sin(x)

cot(90) = cos(90)/sin(90)

cot(90) = 0/1

cot(90) = 0


This is assuming they want it in degree mode.

Answer 2

Its wants the exact value

Answer 3

0 is the exact value

Answer 4

thank you

Answer 5

you're welcome

Answer 6

then what is the exact value -300

Answer 7

hint: -300 is coterminal to 60

Answer 8

so cot(-300) = cot(60)

Answer 9

so it is 60

Answer 10

no

Answer 11

you have to evaluate cot(60) to get the answer

Answer 12

do you divide the sin and the cos

Answer 13

it's actually

cot(60) = cos(60)/sin(60)

Answer 14

use a unit circle to find cos(60) and sin(60)

then simplify

Answer 15

I got 3.124

Answer 16

keep the answer in exact radical form

Answer 17

For example, you should have gotten that

cos(60) = 1/2
sin(60) = sqrt(3)/2

Answer 18

oh okay now I get it

Answer 19

thanks

Answer 20

tell me what you get

Answer 21

0.17

Answer 22

you should get a square root in your answer

Answer 23

how do you do that do you square the answer

Answer 24

cos(60)/sin(60) = (1/2)/(sqrt(3)/2)

cos(60)/sin(60) = (1/2)*(2/sqrt(3))

cos(60)/sin(60) = 1/sqrt(3)

cos(60)/sin(60) = sqrt(3)/3

Answer 25

So that shows us that \[\Large \cot(-300^{\circ}) = \frac{\sqrt{3}}{3}\]

Answer 26

I suck at this

Answer 27

keep practicing and you'll get better at it

Answer 28

maybe I will