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Mathematics 1988 JAMB Past Questions

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36

If cot \(\theta\) = \(\frac{x}{y}\), find cosec\(\theta\)

  • A. \(\frac{1}{y}\)(x2 + y2)
  • B. \(\frac{x}{y}\)
  • C. \(\frac{1}{y}\)\(\sqrt{x^2 + y^2}\)
  • D. \(\frac{x - y}{y}\)
View Answer & Discuss (1) JAMB 1988
37
In triangle PQR, PQ = 1cm, QR = 2cm and PQR = 120o Find the longest side of the triangle
  • A. \(\sqrt{3}\)cm
  • B. \(\sqrt{7}\)cm
  • C. 3cm
  • D. 7cm
View Answer & Discuss JAMB 1988
38

If \(\cos^2 \theta + \frac{1}{8} = \sin^2 \theta\), find \(\tan \theta\).

  • A. 3
  • B. \(\frac{3\sqrt{7}}{7}\)
  • C. 3\(\sqrt{7}\)
  • D. \(\sqrt{7}\)
View Answer & Discuss (2) JAMB 1988
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39
If a metal pipe 10cm long has an external diameter of 12cm and a thickness of 1cm find the volume of the metal used in making the pipe
  • A. 120\(\pi\)cm3
  • B. 110\(\pi\)cm3
  • C. 60\(\pi\)cm3
  • D. 50\(\pi\)cm3
View Answer & Discuss (1) JAMB 1988
40
PQR is a triangle in which PQ = 10cm and QPR = 60oS is a point equidistant from P and Q. Also S is a point equidistant from PQ and PR. If U is the foot of the perpendicular from S on PR, find the length SU in cm to one decimal place
  • A. 2.7
  • B. 4.33
  • C. 3.1
  • D. 3.3
View Answer & Discuss (3) JAMB 1988
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