A student attempts to calculate the missing length a.

Slides:

Advertisements

Similar presentations

Pitch Perimeters WALT : calculate the perimeter of rectangles.

Advertisements

Do now: These cuboids are all made from 1 cm cubes

Co-ordinate Geometry. What are the equations of these lines. Write in the form ax + by + c = 0 1)Passes though (2,5) and gradient 6 2)Passes through (-3,2)

Area of a quadrilateral is when you calculate Length X Width length width Area = length x width.

Measuring Note Cards Purpose: To measure the dimensions of an object as accurately and precisely as possible and to apply rules for rounding answers calculated.

INSERT A TITLE HERE RULES Divide the class into teams. Teams will take turns answering questions. Each class member will take his/her turn to answer.

Measuring Measuring Length, Mass, and Volume. How long is the following? Ans. 7.7 cm.

The Cosine Rule.

Area (compound figure)

On your grids: Draw a square (any size).

Complete the missing numbers using the inverse.

Surds: Multiplying 5 × 3 6 × 3 24 × 3 Silent Teacher

What is the missing angle, x?

Bell Work: Find your new seat

Trigonometry Terrace Find out the angle CAB using Trigonometry.

L.O. Trigonometry All will be able to remember the sine rule

and their missing lengths

Surface area and volume: Surface area of a cuboid

Trigonometry: Missing Sides

Metric Unit Conversion: Lengths

Revision: Circles Silent Intelligent Practice Teacher Your Turn

Worked Example Work out the acute angle, x TITLE: Using the Sine Rule to work out a missing angle Your Turn Worked Example Work out the acute angle,

Differentiation: Basic differentiation

Calculate Length of Arcs

Percentages: Calculating Percentage Change

Decimals: Multiplying by 2.5

Integration: Definite Integration

Equation of a straight line from a graph

Metric Unit Conversion: Metres and centimetres

What is the value of sin⁡

Calculate Areas of Sectors

Circles: Radius or Diameter?

Order of Operations (BIDMAS): Inserting brackets

Standard form: Standard form to small numbers

Area: Area of a rectangle

Fractions: Unit fractions of amounts

Volume: Volume of prisms

Exchange Rates $4=£1 $1=£?? $1=£5 £1=$?? $

What fraction of the whole circle is this sector?

On your whiteboards The radius of this circle is 30 cm What is the circumference of this circle in terms of pi? Show your calculation. Compare and.

Work out the gradient of the tangent to this circle at point (2, 4)

Averages: Mean from a Frequency Table

Sine Rule: Missing Sides

Ratio: Sharing in a Ratio 3

Trigonometry 2 L.O. All will be able to remember the sine rule

Sequences: Finding the nth term rule

What's Missing? The game that challenges you to see if you can spot which punctuation mark has GONE!

Volume: Volume of a cone

Percentages: Reverse Percentages

On your grids: Draw a square (any size).

Welcome GCSE Maths.

A skill needed for today: Work out 10 −3

Ratio: Sharing in a Ratio 3

Similar triangles: Missing sides

Similar triangles: Missing sides with other triangles

Fractions: Adding and Subtracting mixed numbers

What is the missing length? How do you know?

Solving Equations Challenge Answers

On your whiteboards: Section 1: Write your answers as mixed numbers

Check you have all these pieces.

Finding the radius and diameter from Circumference

Fractions of Amounts Find ¼ of £24 = Find ¾ of £24 = Find ½ of £48 =

Standard form: Standard form to large numbers

Median from a list of data:

Discuss: What information must we have to use the sine rule to calculate a missing length?

Finding the radius and diameter from Area

9 x 14 9 x 12 Calculate the value of the following: 1 7 × 5 =

Standard From: Subtracting in standard form

Here are a mixture of integers and decimal values.

Presentation transcript:

A student attempts to calculate the missing length a. The answer is wrong – can you spot the mistake? 𝑎 2 = 12.4 2 + 8 2 −2×8×12.4×75

𝑥 Worked Example Your Turn c TITLE: Using the Cosine Rule to work out a missing length Worked Example Your Turn c 47° 𝑥 Silent Teacher. C = 5.4 cm

Without a calculator, work out the value of n

Discuss: How can there be two possibilities?

x z y In your books, work out the missing lengths. cos 𝐶=− 1 7 𝒂 𝐵=60° 𝑏 z 𝐵=60° y

Mark your work: 10.7 3.2 5 13

Challenge

Acknowledgments: Don Steward and BossMaths