Question

How to solve cot(-45*)

Answer 1

-1

Answer 2

how to solve?

Answer 3

cot is just cos/sin, right? Now you have

cos(-45)
---------
sin(-45)

Now the cool thing about cos, is that it is an even function. Which means we have now:

1/sqrt(2)
----------
-(1/sqrt(2)

Which simplifes to:

1
----
-1

which equals:

-1

Answer 4

sorry for not checking the notifications ;P. but just one question there, um i get the part where you did cos(-45)/sin(-45). how did 1/root(2) change to 1 then -1?

Answer 5

\[\cos(-45)=\frac{1}{\sqrt{2}}\]
\[\sin(-54)=-\frac{1}{\sqrt{2}}\]

Answer 6

typo

Answer 7

\[\sin(-45)=-\frac{1}{\sqrt{2}}\]

Answer 8

take cosine over sine, get -1

Answer 9

okay okay now that explained it! THANKS ! XD!!

Answer 10

\[\frac{\frac{1}{\sqrt{2}}}{-\frac{1}{\sqrt{2}}}=-1\]