The Sine Rule and The Cosine Rule

GCSE Maths revision tutorial video.

[Georgeorwell]

i really wrote out each triangle in the beginning, only for him to solve others

[danmike]

I enjoy how you explain this subject. Thanks, sir.

[BhekithembaIan]

hi i know its a bit late but this was really helpful thank you i just had a question like with cosine rule as the equations are different in question 1 the equation differs from question2 why is that? Also with the sine rule there is a point where you have to square root but in the first question we did not square root why is that ? I feel like there is some sort of difference between the two i would be really glad if you briefly elaborate on this comment thank you

[kuromimeowzz]

aren’t the letters apposite each other so C would be opposite c, B would be opposite b and A would be opposite a?

[ryfus]

why you flipped a/sin x to sin x/a, is there some rule or your mistake ?

[curiouslily]

the real question is, where did you get the calculator???

[walito]

How is this going to help me become rich