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Mathematics Past Questions

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2861
The lengths of the minor and major arcs 54cm and 126cm respectively. Calculate the angle of the major sector
  • A. 360o
  • B. 252o
  • C. 246o
  • D. 234o
View Answer & Discuss WAEC 2012
2862

In \(\bigtriangleup\) XYZ, /XY/ = 8cm, /YZ/ = 10cm and /XZ/ = 6cm. Which of these relation is true?

  • A. /XY/ + /YZ/ = /XZ/
  • B. /XY/ - /YZ/ = /XZ/
  • C. /XY/2 = /Y/2 - /XY/2
  • D. /YZ/2 = /XZ/2 + /XY/2
View Answer & Discuss (2) WAEC 2012
2863
If cos(x + 40)o = 0.0872, what is the value of x?
  • A. 85o
  • B. 75o
  • C. 65o
  • D. 45o
View Answer & Discuss WAEC 2012
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2864

A kite flies on a taut string of length 50m inclined at tan angle 54o to the horizontal ground. The height of the kite above the ground is

  • A. 50 tan 30o
  • B. 50 sin 54o
  • C. 50 tan 54o
  • D. 50 sin 36o
View Answer & Discuss (3) WAEC 2012
2865
Given that the mean of the scores 15, 21, 17, 26, 18 and 29 is 21, calculate the standard deviation of the scores
  • A. \(\sqrt{10}\)
  • B. 4
  • C. 5
  • D. \(\sqrt{30}\)
View Answer & Discuss WAEC 2012
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