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FP2 Help needed . Equations from De moivres

https://postimg.cc/image/rswe21d5j/

Hi guys . Need some help with part C . What’s the best way to tackle these questions . I’m sure there’s a link from the previous parts but I can’t seem to find it

Thanks
Original post by Angels1234
https://postimg.cc/image/rswe21d5j/

Hi guys . Need some help with part C . What’s the best way to tackle these questions . I’m sure there’s a link from the previous parts but I can’t seem to find it

Thanks


it follows directly from the result in part B

... multiply each term in B by 16 & see what it looks like

:h:
Reply 2
It’s sorted now . Thank you

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