  The success of QCD factorization(QCDF) in predicting branching ratios for
charmless $B$ decays to light pseudoscalar and vector mesons and the small CP
asymmetries measured at $BABAR$, Belle and LHCb show that the phase in these
decays, as predicted by QCDF, are not large. For a precise test of QCDF one
needs to extract from the measured decay rates, the phase of the decay
amplitude which appears in the interference terms between the tree and penguin
contribution. Since the tree amplitude is known at the leading order in
$\Lambda_{\rm QCD}/m_{b}$ and is consistent with the measured tree-dominated
decay rates, the QCDF value for the tree amplitude can be used with the
measured decay rates to obtain the phases in $B\to K\pi$,$K\rho$, and $
K^{*}\pi$ decay rates. This is similar to the extraction of the final-state
interaction phases in the interference term between $p\bar{p}\to J/\Psi\to
e^{+}e^{-}$ and $p\bar{p}\to e^{+}e^{-} $ and in $J/\Psi\to 0^{-}0^{-}$ done
previously. In this paper, we present a determination of the phase between the
$I=3/2$ tree and $I=1/2$ penguin amplitudes in $B\to K\pi$,$K\rho$ , and $
K^{*}\pi$ decays using the measured decay rates and the QCDF $I=3/2$ tree
amplitude obtained from the $I=2$ $B^{+}\to \pi^{+}\pi^{0},\rho^{0}\pi^{+},
\rho^{+}\pi^{0 tree-dominated decays and compare the result with the phase
given by QCDF. It is remarkable that the phase extracted from experiments
differs only slightly from the QCDF values. This shows that there is no large
final-state interaction strong phase in $B\to K\pi$,$K\rho$, and $ K^{*}\pi$
decays.
