fp1 question
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Re: fp1 questionBy simple expansion:(Original post by sabre2th1)
How do I write
6(cos(3pi/4) + iSin(3pi/4)) in the form a + ib ?
I can do it the other way, but this is harder..
Can you get it from there? -
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Re: fp1 questionIt shouldn't be harder; if anything it's a lot easier. What is the value of cos(3pi/4) and sin(3pi/4)? Multiply by 6 and you there you have it!(Original post by sabre2th1)
How do I write
6(cos(3pi/4) + iSin(3pi/4)) in the form a + ib ?
I can do it the other way, but this is harder.. -
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Re: fp1 questionJust work out what that comes to, it's not too hard(Original post by sabre2th1)
How do I write
6(cos(3pi/4) + iSin(3pi/4)) in the form a + ib ?
I can do it the other way, but this is harder..
(6cos(3pi/4)=a)
(6sin(3pi/4)=b) -
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Re: fp1 question(Original post by GreenLantern1)
De Moivre's Theorem
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Re: fp1 question
(Original post by dknt)
It shouldn't be harder; if anything it's a lot easier. What is the value of cos(3pi/4) and sin(3pi/4)? Multiply by 6 and you there you have it!
ah(Original post by Fing4)
Just work out what that comes to, it's not too hard
(6cos(3pi/4)=a)
(6sin(3pi/4)=b)
shoulda got that ! thankss
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