SOLUTION: Find all solutions of the equation in the interval [0,2pi]. 2cos(theta) + sqrt( 2 ) = 0 Write your answer in radians in term of pi. If there is more than one solution, sep

Algebra ->  Finance -> SOLUTION: Find all solutions of the equation in the interval [0,2pi]. 2cos(theta) + sqrt( 2 ) = 0 Write your answer in radians in term of pi. If there is more than one solution, sep      Log On


   

Question 1036273: Find all solutions of the equation in the interval [0,2pi].
2cos(theta) + sqrt( 2 ) = 0

Write your answer in radians in term of pi.
If there is more than one solution, separate them with commas.
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Hi there,
2 cos(θ) + √2 = 0
2 cos(θ) = -√2
cos(θ) = -√2/2
θ = 3π/4 , 5π/4
Hope this helps :-)