Quelpr
7 marksSubstitution in Algebraic Expressions

CSEC Mathematics · January 2005 · Paper 2 · Question 12(b)(i)

Given that y = 2 - cos x, copy and complete the table below.

Given that y = 2 - cos x, copy and complete the table below.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 12(a)(i)Draw a diagram to represent the earth showing the equator, the line of 0° longitude, and points A and B.[4 marks]
  2. 12(a)(ii)Calculate the shortest distance between A and B measured along their common circle of latitude.[4 marks]
  3. 12(b)(ii)Using a scale of 2 cm to represent 30° on the x-axis, and 1 cm to represent 0.2 on the y-axis, draw the graph of y = 2 - cos x for 0° ≤ x ≤ 180°.[7 marks]
  4. 12(b)(iii)Using the graph, or otherwise, determine the value of x for which 2 - cos x = 1.8.[7 marks]

More practice: the rest of this paper · more Substitution in Algebraic Expressions questions · all CSEC Mathematics past papers