Ask a New Question
Menu

Given f(x)=1+2cos x , find

  1. cosA= 5/9 find cos1/2Aare you familiar with the half-angle formulas? the one I would use here is cos A = 2cos^2 (1/2)A - 1 5/9 +
    1. answers icon 0 answers
    2. Anonymous asked by Anonymous
    3. views icon 815 views
  2. What am I doing wrong?Equation: sin2x = 2cos2x Answers: 90 and 270 .... My Work: 2sin(x)cos(x) = 2cos(2x) sin(x) cos(x) =
    1. answers icon 1 answer
    2. Anonymous asked by Anonymous
    3. views icon 971 views
  3. Find all solutions on the interval [0.2pi)A) -3sin(t)=15cos(t)sin(t) I have no clue... b) 8cos^2(t)=3-2cos(t) All i did was move
    1. answers icon 1 answer
    2. Dan asked by Dan
    3. views icon 841 views
  4. how does 2cos(2x)-2cos(x)sin(x) becomes 2cos(2x)-sin(2x)? Try to explain each step simply.
    1. answers icon 1 answer
    2. views icon 71 views
  5. Determine the solution of the equetion: 2cos x-1=0? 2cos x=0? and 2cos x+1=0?
    1. answers icon 3 answers
    2. Miley asked by Miley
    3. views icon 495 views
  6. Find minimum value of 2cos x + 2cos y
    1. answers icon 1 answer
    2. vikrant asked by vikrant
    3. views icon 425 views
  7. Find minimum value of 2cos x + 2cos y
    1. answers icon 0 answers
    2. vikrant asked by vikrant
    3. views icon 377 views
  8. Find minimum value of 2cos x + 2cos y
    1. answers icon 0 answers
    2. vikrant asked by vikrant
    3. views icon 395 views
  9. If √2cos(x)-1 = (1+√3)/2 and √2cos(x)+1 = (1-√3)/2, find the value of cos4x.
    1. answers icon 7 answers
    2. sh asked by sh
    3. views icon 850 views
  10. Identify the equation for the following graph: (1 point) Responses y=2cos(2x) y is equal to 2 cosine 2 x y=−2cos(2x) y is
    1. answers icon 1 answer
    2. views icon 93 views