Trigonometric Equation : P1 Pure maths CIE Nov 2013 Q4 : ExamSolutions Maths Revision

[@anoran.7505]

Thank you !! You make it so much easier to understand :))

[@nqobizithabenjamininyathi322]

very useful tutorials indeed......great presentations!!!!!!!!!!!

[@ExamSolutions_Maths]

Thanks

[@Eli7PM]

I love your accent! and great teaching!

[@ExamSolutions_Maths]

Cheers

[@Eli7PM]

I just saw your webpage, and I just could say "wow" because it's so awesome, I want to thank you so much! I'm from the Dominican Republic and we have serious math issues, as in, we have a very low level. Currently I'm studying in Romania and facing the math level here induced me a state of deep depression. But now I'm coming up and recovering everything that I did not learn. I hope some day we will have better text books and better training to teach our near-future generations, good math and good science! I am really thankful for the material you uploaded and the explanation.

[@leeleelaka]

Awesome teaching. As usual great video thanks .:)

[@moa7651]

Do we not change the range in part 2 to 0 to 180 as it is a 1/2

[@hritrikkapoor6496]

you are the best mate could you please solve a p6? just one please

[@Hello_there_obi]

This is really good but you butchered it with the cast diagram. Scrap that just use the unit circle. I know it's the same thing but the real term is the unit circle. And draw the circle! then all you need to do is draw the cosx=1/2 line (i.e. a vertical line at 1/2 on the horizontal axis) and fill the two angles subtended by the line intersecting the unit circle. It's very simple this was and 1000% more intuitive.

[@matteojayakody3009]

Sir please help me with more question I love the way u are teaching

[@samgirl964]

Great video

[@kieronrana5233]

are 120 and 240 not also solutions?

[@robertaries2974]

you forgot to mention on part two that the graph is streched on the x axis by 2. Hence we might've needed to resolve for other answers

[@ExamSolutions_Maths]

Not at all, they would have been out of range as it is basically the same equation as (i) so we should be aware of doubling the answers as I showed and so there would not be a problem. I would agree with your point though if it were 2(theta) as this would have drawn in angles that were outside the original range in (i) and would have been valid.

[@saifimran4502]

wouldn't 120 will be a -120 instead because it will be in the second quadrant ?

[@theycallmepepsi277]

You're the besssssst

[@leeleelaka]

Awesome teaching. As usual great video thanks .:)