Higher
6th August 1981
- 1SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has sides 5 cm, 12 cm and 13 cm. Work out the angle opposite the 5 cm side, to 1 decimal place.
- 2Probability Trees3 marks
A bag holds 4 red and 3 blue counters. Two are taken without replacement. Work out the probability both are red.
- 3Histograms2 marks
A histogram class is 4 units wide and contains 2 values. Work out the frequency density.
- 4Bounds2 marks
A mass is 15 kg, correct to the nearest whole number. Write down the upper bound.
- 5Parallel and Perpendicular Lines3 marks
Work out the equation of the line parallel to y = -4x - 8 that passes through (3, -16).
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