Post a New Question

pre cal 2

posted by .

solve the equation 4cos^2x-1=0

  • pre cal 2 -

    4c0s^2x - 1 = 0.
    4cos^2x = 1,
    Divide both sids by 4:
    cos^2x = 0.25,
    Take sqrt of both sides:
    cosx = 0.5,
    X = 60 deg.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question