Sagot :
Cevap:
Adım adım açıklama:
arkadas zaten güzel cözmüs. sadece son kismi biraz farkli cözdüm.
IBCI=sin2α
IOBI=cos2α
IABI=1-cos2α
IDAI yi bulmak icin;
DAE ucgeni ile CBE ücgeni benzerdir.
IDAI/ICBI = IAEI/IBEI
IDAI/sin2α = 2 / (1+cos2α)
IDAI=2.sin2α/(1+cos2α) olur.
[tex]\frac{IADI.IBCI}{IABI} = \frac{\frac{2.sin2\alpha }{1+cos2\alpha }.sin2\alpha }{1-cos2\alpha } =\frac{2.sin2\alpha .sin2\alpha }{(1+cos2\alpha ).(1-cos2\alpha )} =\frac{2.sin^{2}2\alpha }{1^{2}-cos^{2}2\alpha } =\frac{2.sin^{2}2\alpha }{sin^{2}2\alpha } } =2[/tex]
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