Trigonometry of obtuse angles | mhorley

A simple idea to get students working with trig values of angles greater than 90 and less than 0.  The idea is that they use their calculator (to chose sin or sin-¹) and then work with the symmetry of the graph to find the ordinate required. Download the ppt to click on the boxes to reveal answers one at a time.

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Metric units for length – Answers | corbettmaths

Workout

Question 1: (all cm)

a) 400                       b) 900                    c) 1200               d) 5900

e) 75000                   f) 10500                g) 250                 h) 820

i) 153                        j) 60                       k) 38                    l) 3

Question 2: (all m)

a) 3                           b) 7                           c) 9                    d) 14

e) 2.5                        f) 7.4                         g) 10                 h) 3.48

i) 0.8                         j) 0.7                         k) 0.53               l) 0.02…

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Volume: Pyramid – Answers | corbettmaths

Workout

(all cm3 unless stated)

Question 1

a) 126              b) 96            c) 12           d) 140            e) 50           f) 900,000   or   0.9m2

Question 2:        234.7

Question 3:        192

Question 4:        120

Question 5:        60cm2

Question 6          a) 96                b)  200

Question 7          a) 280              b)   68                 c) 2m3

Question 8:         213.3

Question 9          a) 4.5cm          b) 9.6cm             c) 11cm

Apply

Question 1:         18069333.3 cubits3

Question 2:         12g/cm3

Question 3:         100.8g…

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Squaring numbers – Answers | corbettmaths

Workout

Question 1

a) 3×3             b) 1×1          c) 6×6           d) 9×9          e) 10×10          f) 4×4          g) 12×12

Question 2

a) 2²                b) 5²             c) 11²           d) 35²           e) 20²               f) 13²           g) 7²

Question 3

a) 25               b) 9              c) 64             d) 81             e) 4                  f) 100            g) 49

h) 1                 i) 16             j) 36              k) 121           l) 400             m) 144            n) 2500

Question 4

1, 4, 9, 16, 25, 36, 49, 64, 81, 100

Question 5

a) 196   …

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Why are Finnish principals struggling? | Greg Ashman

Finland is the subject of much myth-making. It’s performance in the Programme of International Student Assessment (PISA) in the early 2000s made Finland the preeminent destination for education tourists. Unlike the East Asian countries that also perform well in PISA, Finland gives the impression of having achieved its success with a more progressive approach. These […]

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