Ask a New Question
Menu

2cos^2(x) = 13sinx - 5

  1. 2cos^2(x) = 13sinx - 5How do i solve for x? I think i have to use the sin^2x + cos^2x = 1, but I'm not sure how to use that. I
    1. answers icon 2 answers
    2. Savannah asked by Savannah
    3. views icon 1,152 views
  2. 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 817 views
  3. 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 975 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 72 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 498 views
  6. solve 12cos^2X=8+13sinX between the window of -360 ¡Ü x ¡Ü 360
    1. answers icon 4 answers
    2. kelly asked by kelly
    3. views icon 558 views
  7. If 13sinx+5=0 and x�[0;270],determine witout the use of a calculator,the value of sin2x
    1. answers icon 2 answers
    2. Zinhle asked by Zinhle
    3. views icon 450 views
  8. 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
  9. Multiply then use fundamental identities to simplify the expression below and determine which of the following is not equivalent
    1. answers icon 1 answer
    2. Tristian asked by Tristian
    3. views icon 1,674 views
  10. Which cosine function has maximum of 2, a minimum of -2, and a period of 2pi/3?Choose from answers below, correct one please. y
    1. answers icon 1 answer
    2. views icon 47 views