Question 291277: How do you solve trigonmetric functions without using a caluculator? Such as cot 495 degrees.
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! How do you solve trigonmetric functions without using a caluculator? Such as cot 495 degrees.
---------------
It's not possible for all angles, unless you use series.
For some angles, tho, such as 495 degs:
Subtract 360 --> 135 degs
Plot it on a unit circle. x is negative and y is positive, and are the same value.
cot = x/y = -1
tan(135) = -1 also
|
|
|
