Higher
11th March 1991
- 1SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has sides 9 cm, 40 cm and 41 cm. Work out the angle opposite the 9 cm side, to 1 decimal place.
- 2Probability Trees3 marks
A bag holds 5 red and 5 blue counters. Two are taken without replacement. Work out the probability both are red.
- 3Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 124 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 4Fractional and Negative Indices2 marks
Write 6^-1 as a fraction.
- 5Parallel and Perpendicular Lines3 marks
Work out the equation of the line parallel to y = -x + 9 that passes through (2, -6).
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