Questions asked by Simmi

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• Solve cos^2 x +cos^2 2x +cos^2 3x=1?
  
• Solve: sin^2 nθ - sin^2(n-1)θ = sin^2 θ, where n is constant and n≠0,1?
  
• Solve:4cosθ-3secθ=2tanθ?
  
• If x belongs to (0,π/2), the number of solutions of the equation sin7x+sin4x+sinx=0?
  
• The general solution of equation sinx+sin5x=sin2x+sin4x is?
  
• The general solution of the equation 2cos2x=3.2cos²x-4 is?
  
• The general solution of tanθ=-1 and cosθ=1/root under 2 is ?
  
• Number of solutions of sin^2θ+3cosθ=3 in [-π,π] ?
  
• Number of solutions of sinx.tan4x=cosx in (0,π) ?
  
• The complete solution set of the equation 1+2cosecx=(sec^2x/2)/2 is what?