Matematika

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tolong ya kawan kawan hehehehe
tolong ya kawan kawan hehehehe

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  • [tex] \frac{sin A}{1 + cos A} + \frac{1 + cos A}{sin A} = 2.cosec A[/tex]

    [tex] \frac{ sin^{2} A + (1 + cos A)^{2} }{sin A (1 + cos A)} = 2.cosec A[/tex]

    [tex] \frac{ sin^{2} A + 1 + 2.cos A + cos^{2} A}{sin A (1 + cos A)} = 2.cosec A[/tex]

    [tex] \frac{1 + 1 + 2.cos A}{sin A (1 + cos A)} = 2.cosec A[/tex]

    [tex] \frac{2 + 2.cos A}{sin A (1 + cos A)} = 2.cosec A[/tex]

    [tex] \frac{2 (1 + cos A)}{sin A (1 + cos A)} = 2.cosec A[/tex]

    [tex] \frac{2}{sin A} = 2.cosec A[/tex]

    2.cosec A = 2.cosec A    ...... terbukti

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