Trigonometry : identities : ExamSolutions
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wow, thank you so much!
3 years ago 4
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sooo hard !! almost hardest thing in pure
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very good.. i see what you're doing, but its that first step i can never take, if i looked at that question in an exam i would have panicked :(
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damn easy.....
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@ExamSolutions Oh i get it now, you factored it.....
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@ptruman2008 me to... what happened to the other 2sin(1/2x)????
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i've checked your website and channel but you don't seem to have any vids outlining the fundamentals when proving identities
Basically i wanted to know if there were any conventions when proving for example;
should you always start from the LHS, the side that has the most terms or the most complex looking side. should you always expand brackets before starting,should you highlight particular terms on one side and aim to make one term on the other that term.
naruto2710 7 months ago
@naruto2710 I try to explain the fundamentals, how I am thinking, why I take such action in each example. Each question is different, you gain the experience by practising many examples and gradually learning what works best. There are no hard and fast rules.
ExamSolutions 7 months ago
at the 3rd LHS dosen't that mean that 2sin(1/2x) should be cubed??? why did the 4th line didn't show the other 2sin(1/2x)???? please answer my question....
TalgicTheCritic 1 year ago
@TalgicTheCritic We are adding not multiplying the 2sin^2 (1/2x) with the other sin(1/2x)
ExamSolutions 1 year ago
@ExamSolutions So if we add them it will be 3sin^2 isn't it????
TalgicTheCritic 1 year ago
@TalgicTheCritic You are clearly very confused and this is not the place for me to run through this with you as it would take more of an explanation. Sorry. Ask your teacher or someone else to explain this to you.
ExamSolutions 1 year ago