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  1. Top | #217

    ÊÇÑíÎ ÇáÊÓÌíá
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  2. The Following User Says Thank You to ÕáÇÍ ÇÍãÏ For This Useful Post:

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  3. Top | #218

    ÊÇÑíÎ ÇáÊÓÌíá
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  5. Top | #219

    ÊÇÑíÎ ÇáÊÓÌíá
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  7. Top | #220

    ÊÇÑíÎ ÇáÊÓÌíá
    Feb 2011
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  8. Top | #221

    ÊÇÑíÎ ÇáÊÓÌíá
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    ÑÏ: ÓÄÇá Çáíæã Ýí ÇáãËáËÇÊ

    ÇÞÊÈÇÓ ÇáãÔÇÑßÉ ÇáÃÕáíÉ ßÊÈÊ ÈæÇÓØÉ ßÇãá ãæÓì ÇáäÇÕÑí ãÔÇåÏÉ ÇáãÔÇÑßÉ
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    \[Q44)\because \sin \alpha \cos \beta =\frac{1}{2}\\sin\left ( \alpha +\beta \right )=\sin \alpha \cos \beta +\cos \alpha \sin \beta =\frac{1}{2}+\cos \alpha sin\beta \\-1\leq \sin \left ( \alpha +\beta \right )\leq 1\Rightarrow -1\leq \frac{1}{2}+\cos \alpha \sin \beta \leq 1\\\therefore -\frac{3}{2}\leq \cos \alpha \sin \beta \leq \frac{1}{2}\]
    ÇáÊÚÏíá ÇáÃÎíÑ Êã ÈæÇÓØÉ ßÇãá ãæÓì ÇáäÇÕÑí ; 06-11-2016 ÇáÓÇÚÉ 04:56 PM

  9. The Following User Says Thank You to ÍÇÌã ÇáÑÈíÚí For This Useful Post:

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  10. Top | #222

    ÊÇÑíÎ ÇáÊÓÌíá
    Feb 2011
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  11. The Following User Says Thank You to ßÇãá ãæÓì ÇáäÇÕÑí For This Useful Post:

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  12. Top | #223

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    ãÍÇæáÉ áÍá ÇáÓÄÇá

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  14. Top | #224

    ÊÇÑíÎ ÇáÊÓÌíá
    Dec 2013
    ÑÞã ÇáÚÖæíÉ
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    ÇÞÊÈÇÓ ÇáãÔÇÑßÉ ÇáÃÕáíÉ ßÊÈÊ ÈæÇÓØÉ ÍÇÌã ÇáÑÈíÚí ãÔÇåÏÉ ÇáãÔÇÑßÉ
    [SIZE=5]

    \[Q44)\because \sin \alpha \cos \beta =\frac{1}{2}\\sin\left ( \alpha +\beta \right )=\sin \alpha \cos \beta +\cos \alpha \sin \beta =\frac{1}{2}+\cos \alpha sin\beta \\-1\leq \sin \left ( \alpha +\beta \right )\leq 1\Rightarrow -1\leq \frac{1}{2}+\cos \alpha \sin \beta \leq 1\\\therefore -\frac{3}{2}\leq \cos \alpha \sin \beta \leq \frac{1}{2}\]
    ÇáÓáÇã Úáíßã
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  15. Top | #225

    ÊÇÑíÎ ÇáÊÓÌíá
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  16. Top | #226

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    Feb 2011
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  17. Top | #227

    ÊÇÑíÎ ÇáÊÓÌíá
    Feb 2011
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  18. Top | #228

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  19. The Following User Says Thank You to ÕáÇÍ ÇÍãÏ For This Useful Post:

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