Jawabanmu

2014-06-11T13:52:16+07:00
Cos2b=cosb^2-sinb^2
sinb/cosb=p
sinb=cosb p
cosb^2-cosb^2 p^2
cos2b=cosb^2(1-p)
Jawaban paling cerdas!
2014-06-11T14:26:01+07:00
Tan b = p

tegak = a
miring= c
alas= b

a=bp
b=ap
 c^{2} = (bp)^{2}  +  b^{2}
c= \sqrt{ b^{2}(p+1) }

cos 2b= sin b
 \frac{a}{c} = (bp)^{2}  x  b^{2} (p+1) =  b^{3}  p^{2}  ( p^{2} +1)
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