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ZeHanz Group TitleBest ResponseYou've already chosen the best response.0
225 degrees rings a bell, no?
 one year ago

Kweku Group TitleBest ResponseYou've already chosen the best response.0
it is complex numbers
 one year ago

ZeHanz Group TitleBest ResponseYou've already chosen the best response.0
Not yet ;) I meant that sin225 and cos225 are supposed to be wellknown numbers: they have to do with the 454590 degree triangle, with sides a, a and a√2. Does that ring a bell? See image. Both sin225 and cos225 are: \[\frac{ 1 }{ 2 }\sqrt{2}\]
 one year ago

Kweku Group TitleBest ResponseYou've already chosen the best response.0
you mean right angled triangle?
 one year ago

Kweku Group TitleBest ResponseYou've already chosen the best response.0
so you mean the angles should be in the first quadrant?
 one year ago

ZeHanz Group TitleBest ResponseYou've already chosen the best response.0
No, 225 is in the third quadrant. I only meant that in the 3rd quadrant you get the same values (just negative) as in the triangle with 454590 degrees.
 one year ago

ZeHanz Group TitleBest ResponseYou've already chosen the best response.0
Therefore you now have \[3(\frac{ 1 }{ 2 }\sqrt2+i \cdot \frac{ 1 }{ 2 }\sqrt 2)\]And if you work out the brackets you're done.
 one year ago

Kweku Group TitleBest ResponseYou've already chosen the best response.0
Yeah I get you but that does not make any change.
 one year ago

ZeHanz Group TitleBest ResponseYou've already chosen the best response.0
Is your problem solved then?
 one year ago
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