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JAMB Mathematics 2009 Objective — Question 34

Question 34 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2009 Objective paper, with the correct answer and a full explanation.

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Find the value of sin 45 - cos 30

  • A. (2+sqrt6)/2
  • B. (sqrt2+sqrt3)/4
  • C. (sqrt2+sqrt3)/2
  • D. (sqrt2-sqrt3)/2Correct

Explanation

sin45 = sqrt2/2, cos30 = sqrt3/2. sin45-cos30 = (sqrt2-sqrt3)/2.

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