The formula for sine is a/SinA = b/SinB = c/SinC. Therefore why in the second question are the sin values on the top of the fraction when they were the denominator in the first question. Thank you.
The Sine Rule can be rearranged, and either form is correct. a/sin(A) = b/sin(B) = c/sin(C) or sin(A)/a = sin(B)/b = sin(C)/c In much the same way as when I rearrange: 5/x = 3/y 5y = 3x y/3 = x/5
It's more that you should know that this can happen and be able to problem solve should it come up. A question may ask you to write down the two possible angles...
I sometimes re-film videos if either an error has been made or a point requires further elaboration, or sometimes I film a new video if someone suggests something and I decide to include it. This one is a replacement.
i did 72/sin(29) = 113/sin(b), and then 72/113sin(29) and got 1.34264641. I want to know if I did something wrong with the fraction somewhere as I got a different answer when inverting the fraction.
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Hello sir great video as always, I do have a question does this only happen for sin or can it happen for cos and tan
The formula for sine is a/SinA = b/SinB = c/SinC. Therefore why in the second question are the sin values on the top of the fraction when they were the denominator in the first question. Thank you.
The Sine Rule can be rearranged, and either form is correct.
a/sin(A) = b/sin(B) = c/sin(C)
or
sin(A)/a = sin(B)/b = sin(C)/c
In much the same way as when I rearrange:
5/x = 3/y
5y = 3x
y/3 = x/5
is it a must that you mention the two possible angles or can you just mention one of them
It's more that you should know that this can happen and be able to problem solve should it come up. A question may ask you to write down the two possible angles...
I thought youd finished all the a level videos? Will you be doing more?
I sometimes re-film videos if either an error has been made or a point requires further elaboration, or sometimes I film a new video if someone suggests something and I decide to include it. This one is a replacement.
i did 72/sin(29) = 113/sin(b), and then 72/113sin(29) and got 1.34264641. I want to know if I did something wrong with the fraction somewhere as I got a different answer when inverting the fraction.
for angles, its sin(A)/a = sin(B)/b