SOLUTION: If cos θ = 0.2, find the exact value of cos θ + cos(θ + 2pi) + cos(θ + 4pi)

Algebra ->  Trigonometry-basics -> SOLUTION: If cos θ = 0.2, find the exact value of cos θ + cos(θ + 2pi) + cos(θ + 4pi)      Log On


   

Question 839522: If cos θ = 0.2, find the exact value of cos θ + cos(θ + 2pi) + cos(θ + 4pi)
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
= 0.2 + 0.2 + 0.2
0.6