Question

cot 930 degree

Answer 1

use your Unit Circle :)

Answer 2

pi/6 is what i came up with but its wrong

Answer 3

Rotation twice is 360*2 = 720
So, you can subtract to make life easier: 930-720=210

That is cot 930 = cot 210

Now, 210 is in the 3rd quadrant. I have just as well subtract 210 - 180 = 30

Let us start with tan 30. You should get 1/ √3

Since tan is positive in the 3rd quadrant, tan 210 = tan 30 = 1/ √3

But you need cot 210

cot = 1/tan

So, cot 210 = 1/(1/ √3) = √3

Hence, cot 930 = cot 210 = √3

Answer 4

so make it a number that we can see on the unit circle then do the formula for tan correcct

Answer 5

yes

Answer 6

so does that mean sin 495 degree is \[\sqrt{2}\]

Answer 7

well, is the same as 495-360, or 135 degrees :), II quadrant or \[\frac{\sqrt{2}}{2}\]

Answer 8

oh okay thank you. i think i got it now