posted by .


Solve for x.

  • Trig -


  • Trig -

    [Double angle identity]

    Now I'm stuck.

  • Trig -

    hey ted did you ever figure that out because if so tell me tell me now plz i need this very much

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math - Solving for Trig Equations

    For the following equation, why cannot I not solve it?
  2. Trigonometry

    cos2x(2cosx+1)=0 x=?
  3. Trig--check answer

    Solve the equation of the interval (0, 2pi) cosx=sinx I squared both sides to get :cos²x=sin²x Then using tri indentites I came up with cos²x=1-cos²x Ended up with 2cos²x=1 Would the answer be cos²x=1/2?
  4. trig

    prove that (2cosx+1)(2cosx-1)= 1 +2cos2x
  5. Calculus

    Solve identity, (1-sin2x)/cos2x = cos2x/(1+sin2x) I tried starting from the right side, RS: =(cos²x-sin²x)/(1+2sinxcosx) =(cos²x-(1-cos²x))/(1+2sinxcosx) and the right side just goes in circle. May I get a hint to start off?
  6. Trig

    Solve for x in the interval [0,2pi) sin^2x+2cosx=2
  7. trig

    how do you solve: find cos2x if sinx is equal to 1/5
  8. Trig

    Solve: cos2x(2cosx+1) for 0degrees is less than or equal to x is equal to or less than 360degrees
  9. Precalculus

    How would you solve this trig function: cos2x=sin^2-2 how do you know what trig identities to use?
  10. trig

    I keep trying to find the power reducing formula for sin^4(x), but I can't seem to get all the fractional parts correct. The answer I should be getting is: sin^4(x)=(1/8)cos4x-(1/2)cos2x+(3/8) I can only get this far knowing feeling …

More Similar Questions