S3 Maths Scribe-post Blog

Here it is:
S4 Revision Calendar
and here’s a pdf to print off:
s4 revision plan

all the pics i put on here didn’t meet security measures, so il have to explain it.
if you have a right angle triangle and the adjent-hypotinuse angle is 30 degrees
adjent line is 40 cm
the opposite is X
the working you have to show is as folows
tan 30= opp/adj
tan 30= X/40
X= 40xtan 30
= 23
for the next scribe i pick [...]

There are different types of angle but ones I have to talk about are:
complementary angles: complementary angle are angles whose mesument adds up to be 90 degrees or a right angle, shown below:)

supplementary angles: supplementary angles are 2 angles whose sum adds up to be 180 degrees , as shown below;)
[...]

Today we studied distance-time graphs. We had to find answers too questions that involved finding an average speed using the equation S= D/T (speed = distance over time)
Aswell as finding out answers from a graph.
Too find average speed you would first find the distance on a graph at a certain then you would find the [...]

Many geometric shapes contain right angles and right-angled triangles.
You may find it helpful to sketch the right angled triangle being used.
Find a right angled trianngle out of a shape and use this example and theorem
xsq =5q +8sq
>xsq =25+64
>xsq =89
>x=89sqroute =9.4 (to 1 d.p)
*the sq is squared and sqroute is canna obvious but its square route
I [...]

At the start of the lesson our aiims were:
1. To become confident about using Pythagoras’s technique.
2. To Learn how to find the missing shorter side.
ok so u all saw sorrel’s amazing post on pythagoras’ theorem. i will just add a tiny bit more. Yesterday in maths mr jones taught us how to find [...]

We call C the Hypotenuse of this right angled triangle.
The Hypotenuse is allways opposite of the right angle!  This is the process to work out the length of C!
Using the length of A draw a square,(all the sides of the square are the same length). repeat this on the b and c sides of the triangle   :

Square A and B [...]

To tell the difference between Inverse an Direct proportion you need to make sure that you have understood the concept of them both first of all.
Direct proportion = if you double one you have to double the other
Inverse proportion = if you double one then you halve the other
So what would this be either [...]

Mr Jones asked us to answer this:
It takes 6 men 10 days to build a wall
How long would it take 5 men?
What we did was made a table that looked like this
                                            Men                 Days
                                              6                      10
  He told us to find out              1                      60
what 1 man was and how         5                      12
many days it would take them
so we did.        
We worked [...]

Today in maths we did Hire purchase and Loans.
Example 1
Loans
£1200 Loan
6 Repayments = £215
Total Repayments =
How much more does the loan cost than the paying cash?
We worked this out by finding the total repayments, and you do this by multiplying 6 by £215.
So the total amount of repayments needed is £ 1290
The loan costs £90 [...]