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5 Written questions

5 Matching questions

  1. tan(a+b)
  2. tan(a-b)
  3. tan(-x)
  4. cos^2 x + sin^2 x
  5. cosx - cosy
  1. a -tanx
  2. b tana+tanb/1-tanatanb
  3. c tana-tanb/1+tanatanb
  4. d 1
  5. e -2sin1/2(x+y)sin1/2(x-y)

5 Multiple choice questions

  1. -sinx
  2. cosx
  3. 2sinacosb
  4. 2cosasinb
  5. cos^2x-sin^2x

5 True/False questions

  1. tan(1/2x)sinx/1+cosx

          

  2. cos(a+b) + cos(a-b)2cosacosb

          

  3. cos(1/2x)+-√1/2(1+cosx)

          

  4. sin(a-b)sinacosb-cosasinb

          

  5. sinx + siny2cos1/2(x+y)sin1/2(x-y)