Flashcards
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Cards in this deck (25)
- 1What is a rational decimal?A decimal which can be written as a fraction
- 2What is an irrational decimalCannot be written as a fraction
- 3What is the recipricol of the number n?1/n
- 4What is 0.915 as a fraction?305/313
- 5In a right angled triangle, what is the sin of angle x?The sin of angle x is the ratio of the opposite side to the hypotenuse side
sin x = opp/hyp - 6What is the tangent of angle x?The ratio of the opposite side to the adjacent side.
tan x = opp/hyp - 7What is the cosine of angle x?The ratio of the adjacent side to the hypotenuse side
cos x = adj/hyp - 8What is the angle of elevation?The angle measured upwards from the horizon.
- 9What is the angle of depression?The angle measures downwards from the horizon.
- 10What are the steps in trigonometry to find the angles?- Label the sides of the triangle
-Select the ratio
-Sub in the values
-Solve. - 11Liam, Sarah and Emily shared money in the ratio 2:3:7. Emily got £80 more than Liam. How much money did Sarah get?7 - 2 = 5 parts difference
80/5 = 1 part
16 x 3 = £48 - 12What is the pattern to an arithmetic sequence?A constant amount is added to a term to get the next one (or subtracted)
- 13What does the position to term rule tell us?It tells us how to work out a term from its position
- 14What do you call the order of a linear sequence is the values are increasing?Ascending order
- 15How do you form the Fibonacci Sequence?Add the two terms to get the next term
- 16How do you work out the common ratio in a geometric sequence?Divide a term by the one before it
- 17What is continuous sampling?Measured on a scale and can take any value in scale (e.g. height, weight, time...)
- 18What is meant by the term 'Population'The whole data set
- 19What is Primary Data?Data you collected yourself
- 20What is a Census?Obtains information from every part of the population
- 21What are Data Collection Methods?- Questionnaires
Observation
Experiments - 22What is it called when you split your data into 4 parts?Splitting it into quartiles
- 23How do you work out the position of the lower quartile?n+1/4
- 24What are Congruent triangles?They have the same size and shape
- 25—
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- Flashcards on Untitled, created by Tamara Miah on 29/09/2016.
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- Tamara Miah
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