Question

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Answer 1

Didn't you ask this before?

Answer 2

no its different question..

Answer 3

cot = 1/tan

so find tan of your angle and then take the reciprocal

e.g.

\[\tan(\frac{\pi}{6}) = \frac{1}{\sqrt{3}}\]

so

\[\cot(\frac{\pi}{6}) = \frac{\sqrt{3}}{1}\]

Answer 4

Or maybe it was cos(x).

It's the same idea as your previous one. Plug in your data.

Answer 5

thats what goes in the chart?

Answer 6

Not exactly, because \(\Large \frac{\pi}{6}\) isn't one of the options. But he showed you how to do it.

Answer 7

You would do the same calculation for each of your values.

Answer 8

can you just do it for me so i can see?

Answer 9

@campbell_st showed you exactly what to do. Just replace \(\large \frac{\pi}{6}\) with each of the values you need to find.

Answer 10

So you'll start by finding tan of \(- \pi\), and finding the inverse (1 over your answer). That will be your result for the first box.

Answer 11

cot(-π)

Answer 12

? @geoffb

Answer 13

Yes, exactly. And, as campbell said, \(\cot(-\pi)\) is just \(\large \frac{1}{\tan (- \pi)}\), which you can solve on a calculator easily.

Answer 14

I dont seem to be getting the answer! @geoffb

Answer 15

What is \(\tan (- \pi)\)?

Answer 16

i got 0

Answer 17

Good. And what is the inverse of that (1/0)?

Answer 18

are you asking me if it is (1/0)??

Answer 19

Sorry, I mean what is \(\frac{1}{0}\)?

Answer 20

What is one divided by zero? What does it equal?

Answer 21

when i plug it in my calculator it says "error"

Answer 22

A calculator will give you an error, or undefined. One divided by zero is infinity, so:

\[\cot(- \pi) = \infty\]

Answer 23

Now plug in each of your values from your chart, and solve just like you did for negative pi.

Answer 24

ok so next is cot (-3pi/4)?

Answer 25

Yes. Easier to solve if you do:

\[\Large \frac{1}{\tan (\frac{-3 \pi}{4})}\]

Answer 26

do you think you can set all of them up for me Please?

Answer 27

It's already set up in the chart.

Nothing changes for each one. It's just 1 over tan of whatever is given in the chart.

Answer 28

do i simplfy it or evaluate it?

Answer 29

It might be best left in a fraction, if that's what you get.

Answer 30

so simplify?

Answer 31

I don't think you should end up with any fractions or decimals. You should be getting answers like 0, 1, and infinity.

Answer 32

I got 1

Answer 33

..so how would i set up the next one

Answer 34

@geoffb