bilfen trigo 2

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lopital

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May 4, 2015, 1:15:26 AM5/4/15
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0 < x < pi/4

ve 4tanx + 3cotx = 7  olmak üzere,   cosx = ?

1/5

4/5

12/25

17/25

3/4

hasan38

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May 4, 2015, 1:19:26 AM5/4/15
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Cotx yerine 1/tanx yazdıktan sonra çarpanlara ayirin tanx=3/4 buradanda dik üçgen yardımıyla cosx=4/5 cikar
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