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sir, for expressing any complex number in its polar form,is it necessary to have a "+" sign between cos theta and isin theta???

sir,


for expressing any complex number in its polar form,is it necessary to have a "+" sign between cos theta and isin theta???

Grade:12

1 Answers

shalini goyal
37 Points
12 years ago

yes,u hv 2 manage the angle lyk dat only so dat dere exists a + sign in betwn sine nd cosine f:ns......lets say a givn xpresion cos330.-isin330........here 330. is d angle f 4th quad.....here cos is + n sine is(-)......also sine330.can b written as (-)sin30.and cos330.is equal 2 cos 30.only.....so expr cn b written as cis30....!!similar concept cn b applied 2 odr problemz also.....as many ques u"ll practice.....ur confidence will boost up accordingly....ol d bes!!!!!

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