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5 Written questions

5 Matching questions

  1. -cos(a+b) + cos(a-b)
  2. cos(-x)
  3. csc(90-x)
  4. cot(90-x)
  5. cos2x
  1. a 2sinasinb
  2. b secx
  3. c 2cos^2x-1
  4. d cosx
  5. e tanx

5 Multiple choice questions

  1. 2cos1/2(x+y)cos1/2(x-y)
  2. tana+tanb/1-tanatanb
  3. 1
  4. -2sin1/2(x+y)sin1/2(x-y)
  5. sinacosb+cosasinb

5 True/False questions

  1. 1 + tan^2 x2tanx/1-tan^2x

          

  2. sec(-x)-sinx

          

  3. cot(-x)-cotx

          

  4. sin(1/2x)sinx/1+cosx

          

  5. tan2x2sinxcosx

          

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