advanced functions

posted by .

Determine approximate solutions for this equation in the interval x is all real numbers [0, 2pi), to the nearest hundredth of a radian:

cosx + 0.75 = 0

  • advanced functions -

    cosx = -.75
    the cosine is negative in II and III
    take inverse cosine of +.75, this will give you the reference angle
    for angle in II, take pi - reference angle
    for angle in III take pi + reference angle

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. trig

    Find all solutions of the equation 2sin^2x-cosx=1 in the interval [0,2pi) x1= ?
  2. Advanced Functions

    Determine the solutions for: (cos x)/(1 + sinx) + (1 + sinx)/(cosx) = 2 in the interval x is all real numbers, such that [-2 pi, 2pi]
  3. Advanced Functions

    Determine all solutions in the interval x is all real numbers , [0, 2 pi] using a trigonometric identify 2cos^2x + sinx - 1 = 0
  4. Math

    Approximate the equation's solutions in the interval (0,2pi). sin2x sinx = cosx I know that I should work on the left side first. I know how to solve for the intervals but I am just not sure how to start this off.
  5. Pre-Cal

    Approximate the equation's soultions in the interval (o, 2pi). If possible find the exact solutions. sin 2x sinx = cosx I do not know where to start.
  6. Pre-Cal(Please help)

    Approximate the equation's soultions in the interval (o, 2pi). If possible find the exact solutions. sin 2x sinx = cosx I do not know where to start.
  7. Trigonometry

    Find all solutions of the equation in the interval [0,2pi] algebraically. sin^2x + cosx + 1 = 0
  8. calculus

    Find all solutions to the equation in the interval [0,2pi) Cosx-cos2x
  9. Pre Calculus

    Approximate, to the nearest 0.01 radian, all angles theta in the interval [0,2pi) that satisfy the equation. a.) sin theta=-0.0135 b.) cot theta=-2.731 Thank you for helping! I appreciate it!
  10. Math

    Directions: Find all solutions of the equation in the interval (0, 2pi) sin x/2=1-cosx

More Similar Questions