How do you solve conditional probability examples?
What is the probability of an event A given that event B has occurred?
This is conditional probability, solved by the formula that P(A|B) which reads "probability of A given B" is equal to the P(A intersect B)/P(B).
Three examples are examined.


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Conditional Probability Formula: P(A|B) = P(A and B)/P(B)

We look at the trigonometric functions: sine, cosine, and tangent used to work out sides and angles in right angle triangles.
You will learn the following steps -
1. Labelling the sides - opposite, adjacent and hypotenuse,
2. Determining which trig function should be used - SOHCAHTOA - (sin = opposite / hypotenuse,
cos = adjacent / hypotenuse, tan = opposite / hypotenuse)
3. Substitution of values.
4. Calculation.
By going though all the trigonomic functions this video will help you master this topic - through the use of a few math tricks! To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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Being able to add two numbers quickly is an important maths skill.
This lesson shows how to add quickly in your head, from left to right (the way you would say the answer), through carrying numbers forward.
Mental computation - practice it - especially addition, as this is the most common use of maths used in society.

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This trick goes on beyond the simple elevens times table pattern you probably already know - WAYYYY beyond! You can easily work out ANY elevens times tables question - instantly!

Well done you!

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To go to the decimals playlist follow this link:
https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

Adding decimals is easy - just make sure all of the place values (especially the decimal place) line up. Through the information in this math lesson, and practice you will soon be adding decimals easily. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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How to work out spped distance and time calculations easily.
This shows an easy was to remember all the formulas so you'll be calculating velocity problems no problem!

To go to the fractions, decimal and percent playlist follow this link:
http://www.youtube.com/watch?v=do_IbHId2Os

Some decimals are easy to convert to fractions - you just put the decimal over a suitable multiple of ten - and then simplify from there. To do the more complex decimal to fraction conversions there is a trick, which involves some very easy algebra. Learn how to do this and you will be able to convert any decimal to a fraction.

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Follow the basics and it's easy to multiply matrices.
Start off easy with orders - rows and columns and from there you'll be adding, subtracting and multiplying matrices.


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Trigonometry is an easy way to work out the unknown sides and angles of a right angled triangle. The trick - know the side names - the opposite, hypotenuse, and adjacent, and know how and when to apply the trigonomic functions - sin, cos and tan. This is the only trick to getting it right every time!
In this lesson, students learn work out unknown side lengths using use sine, cosine, and tangent. You will need a scientific calculator for the problems in this lesson - and I'll show you how to access one on your computer.

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How Many Faces, Edges And Vertices Does A Octagonal Prism Have?
Here we’ll look at how to work out the faces, edges of vertices of an octagonal prism.
We’ll start by counting the faces, these are the flat surfaces that make the 3D shape. An octagonal prism has 10 faces altogether - 2 octagonal faces, as well as 8 rectangular faces.
Next we’ll work out how many edges the shape has, which are where two faces meet. An octagonal prism has 24 edges.
Next we’ll count the corners of the shape(the corners). Get counting! An octagonal prism has 160 vertices.

For the full playlist for the faces, edges and Vertices of a whole lot of 3D shapes go to https://www.youtube.com/playli....st?list=PLjbxBzUM6SL

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Calculate the cube of any number between 1 and 100 fast

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Surface Area Half Cylinders To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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Surds / Radicals - the basics made easy. Maths is radical (bad pun). To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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How to work out the area of a rectangle in square feet and square inches.


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In this math algebra trick we will look at how to directly divide big polynomial expressions. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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The nine times table is one of the easiest times tables - if you know these tricks! Make maths multiplication easy! This video is epsecially for people learning thenine times table!

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How to calculate surface area of a cylinder.
The surface area of a cylinder is easy to work out. In this video we will look at how to do it quickly and accurately.

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Basic working out of wages involving flat rates of pay, and overtime.
Also shown is how to fill in a timesheet, and work out pay from a timesheet. To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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How to work out IV rates. This part of a series looking at math calculations used by nurses. T

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This math lesson looks at pythagorean math - how to work out the unknown sides of right angles triangle. The 3,4,5 triangle will also be explored. Become a math genius! To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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