SOLUTION: find the remaining trigonmetric functions of x if: cosx= -3/5, x in quadrant II

Algebra ->  Trigonometry-basics -> SOLUTION: find the remaining trigonmetric functions of x if: cosx= -3/5, x in quadrant II      Log On


   

Question 910024: find the remaining trigonmetric functions of x if:
cosx= -3/5, x in quadrant II
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
find the remaining trigonmetric functions of x if:
cost= -3/5, t in quadrant II
------------
By definition cos = x/r so x = -3 and r = 5
----
y = sqrt[r^2-x^2] = sqrt[25-9] = 4
---------
sin = y/r = 4/5
cos = x/r = -3/5
tan = y/x = -4/3
----
csc = 5/4
sec = -5/3
cot = -3/4
=====================
Cheers,
Stan H.
---------------------