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4 marksApplying Trigonometric Ratios

CSEC Mathematics · May/June 2005 · Paper 2 · Question 5(c)

A vertical stick of height 1.8 m casts a shadow of length 2 m on the horizontal, forming a right-angled triangle.

Calculate, to the NEAREST degree, the angle of elevation of the sun.

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Other parts of this question

  1. 5(a)On graph paper, draw the x-axis and the y-axis. Using a scale of 1 cm to represent 1 unit on both axes, draw the triangle DEF with vertices D (1, 1), E (3, 1)…[3 marks]
  2. 5(b)(i)Draw the image of ΔDEF under reflection in the line x = 4. Name the image ΔD'E'F'.[5 marks]
  3. 5(b)(ii)Draw the image of ΔD'E'F' under the translation [0, -3]. Name the image D"E"F".[1 mark]
  4. 5(b)(iii)Name the type of transformation that maps ΔDEF onto ΔD"E"F".[1 mark]

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