Higher
26th January 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.
- 3Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 40 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 4Fractional and Negative Indices2 marks
Write 2^-2 as a fraction.
- 5Parallel and Perpendicular Lines3 marks
Work out the equation of the line parallel to y = -2x - 6 that passes through (5, 1).
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