Page 157 - Math Grade 11 (Advance)

PROEUS DARA

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NtmtHU 1
IJ

7
tH~W tttlru cos n =cos(-~) sh -sin~= sin(-~)
4
tf!'iQlS z 1 = 2cos(- ~) + 2isin(- ~)

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0
tf!'i'HlS13SSnut3 z = l+cos<p-isin<p ti::lru -n+2kJt<<p<n+2kn,
u l<V

tH~W tttl ru 1 + COS(j) = 2cos ~ cUi ru sin<p = 2sin~cos~
2
tf!'iQlS z = 2cos2T- i2sinTcosT = 2cosT(cosT- isinT)
2 2 2 2 2 2
= 2cos~[ cos(-~) + isin(- ~) J

- n + 2kJt < <p < n + 2kJt t S1 g -n + kn < 9: < ~ + kn
2 2 2

::;. COS~>O, 2cos~ dl~4illt2 Z

z = 2cos~[ cos(- ~) + isin(- ~) J dl9L'i§~~ tAlM'HlUi '1

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