Questions asked by Alisha Diphda

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• How do you prove #(tanx+sinx)/(2tanx)=cos^2(x/2)#?
  
• How do you prove sin3x=3cos^2xsinx-sin^3x?
  
• How to prove (tan^3x-cot^3x)/(tan^2x+csc^2x)=tanx-cotx?
  
• How do you solve #cos^3x-2sinx-0.7=0#?
  
• How do you solve this and write in factored form? Sec^2x-secx+tan^2x