SOLUTION: 2cos(x)+sqrt(2)=0

Algebra.Com
Question 242664: 2cos(x)+sqrt(2)=0
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
2cos(x)+sqrt(2)=0
cos(x) = sqrt(2)/2
x = pi/4, 3pi/4 (45 and 135 degrees)
--------------------
General solution:
x = pi/4 + 2n*pi, n = 0,1,2,...
x = 3pi/4 + 2n*pi, n = 0,1,2,...

RELATED QUESTIONS

Find all exact solutions, in radians, of: 2cos^2(x) + sqrt(2)cosx= 0... 0 (answered by lwsshak3)
cos^2(x)+2cos(x)+1=0 (answered by josgarithmetic)
Solve 2cos x+2cos 2x=0 on the interval... (answered by Joker)
Solve the following equation for the principal values: 2cos^3 x+2cos^2... (answered by solver91311)
Solve the following: 0 less then or equal to x less then 2pi A) 4cos x + sqrt 3= 2cos x (answered by mananth)
Solve the equation on the interval 0 (answered by ewatrrr)
Solve on the interval from 0 to pi:2cos^2 x-3 sin... (answered by lwsshak3)
Find all solutions:... (answered by stanbon)
[0,2pi]... (answered by ikleyn)