SOLUTION: How to solve this eqaction Solve the equation 7cosx + 3 = 0 over the interval ( 0,360)

Algebra ->  Trigonometry-basics -> SOLUTION: How to solve this eqaction Solve the equation 7cosx + 3 = 0 over the interval ( 0,360)      Log On


   



Question 846816: How to solve this eqaction
Solve the equation 7cosx + 3 = 0 over the interval ( 0,360)

Found 2 solutions by stanbon, Fombitz:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
How to solve this eqaction
Solve the equation 7cosx + 3 = 0 over the interval ( 0,360)
--------
cos(x) = -3/7
-------
x = arccos(-3/7) = 115.38 degrees
Also
180-115.38 = 64.62
x = 180+64.62 = 244.62 degrees
============
Cheers,
Stan H.

Answer by Fombitz(32388) About Me  (Show Source):