Help with My Questions - I Want Your Assistance

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SUMMARY

The discussion revolves around solving mathematical questions related to angles and complex numbers. User r-soy addresses issues with the precision of results, specifically noting that the output of 5.8 does not conform to two decimal places and that the conversion to an angle is necessary before performing further calculations. Additionally, the use of the fifth power of the complex number representation (cos + isin) is highlighted as a point of confusion in the calculations.

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r-soy
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Hi

here a put two Q with it soving I want check

[PLAIN]http://up.arab-x.com/Mar10/ZKR33215.jpg

http://arb-up.com/i/00020/egtlvnenn9xs.jpg

http://arb-up.com/i/00020/hd8k4515ke6v.jpg
 
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Hi r-soy! :smile:

Q3: fine so far, except:​

i] 5.8 isn't two decimal places

ii] i don't get exactly 0.64

iii] you still need to convert it into an angle before you subtract 180º :wink:

Q4: 64 (= 26) is correct, but you seem to be using the fifth power of the (cos + isin) for some reason :confused:
 

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