IB Math Studies Topic 5 Revision: Geometry and Trigonometry (May 2015

For IB Math Studies Revision:

#1 Distance and Midpoint Formulas
#2 Equations of Lines: Gradient, Parallel/Perpendicular Lines (5:56)
#3 SOHCAHTOA and Pythagoras (19:45)
#4 Non-Right Angled Trigonometry (33:19)
#5 Geometry of 3D Shapes (49:31)

[Guitarmanklife]

Dude,
You're like the Khan Academy for IB students. Thanks man

[DoubleTheAwesome]

You managed to explain trigonometry in less than an hour, when my maths teacher has been trying to explain it for weeks. Thank you! :)

[noreenmika]

to be honest, you're an amazing teacher!! great review the day of the exam!

[benm]

Thank you from El Salvador! ! ! ! ! You saved my life, I have an exam tomorrow and I was lost, Thank you

[lizsanchez]

I have a test over this topic tomorrow and this video served as a great review. Thank you so much for this! 

[tinomutasa]

You have made a level 7 a possibility. Thank you

[RickParina]

No problem at all. There are also videos for Topics 2, 3 and 4 already made and Topics 6, 7 and 8 will be done by tomorrow so there is one for each topic if you need some extra revision. :)

[babbalaminou]

There is no word to describe my gratitude

[RickParina]

No problem at all... I'm glad the videos are helping you. Best of luck to you!

[soccerstarnes]

These videos are super helpful! It's a great way to review before my exams! Correct me if I'm wrong, but I was watching #5, Geometry of 3D Shapes and at 54:39, shouldn't it be sin^-1(7/7.842) instead of sin^-1(7/7.482)? That would change the answer to 63.2. I think you might've just gotten the numbers mixed up for 7.842.

[victoriatroos]

This is amazing! We have had different teachers over the last years, and the one we have now has never taught IB studies before. This have led to much confusion, so this really helps a lot :) Also we have not used the calculator that much, so I feel like an entire new world is opening up to me. Thank you very much! :)

[ExtraCarrot]

Thanks a lot! helped so much for tuesday's and wednesday's exams! IB life saver! :) 

[shahaalagil]

this helped a lot for my exam tomorrow. i was in your 10th grade math class last year. I was one of the bottom ones next to aboudy on your fridge 

[RickParina]

Hi Casey. Since it is x^3 you are actually taking the third root of 512. So in the calculator you would enter 512 ^ (1/3) and your answer would be 8. In essence we are looking for a number that multiplied by itself 3 times = 512. 8 x 8 x 8 = 512. Hope that helps!

[RickParina]

You are totally right, a silly mistake. I make a speech bubble to correct it. Thanks. Best of luck on paper two!

[ricardobandera]

Richard around the 14 minute mark, the equation is supposed to be negative since L2 is downward sloping, just to let you know and you wrote x + 2y +2 = 0

[hardikbeastchoubey]

this video was super helpful can you please upload a new one with the latest math exam paper.

[YewandeDental]

Hey Rick! at 50:42, you said the area would be 1/3 but you wrote 1/2, just thought id let you know

[gabivwind]

Thank you! You are very understandable! again thank you!

[d-l-p]

At 30:19, How did you get 8? I tried 512 divided by 1/3 and I got 170.6. Thank you, your videos are really helpful btw!!!