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Sophiel44

  • 3 years ago

(sin theta - 1) (5 cos theta + 3) =0

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  1. Sophiel44
    • 3 years ago
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    |dw:1365762111152:dw|

  2. gerryliyana
    • 3 years ago
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    (sin theta - 1) (5 cos theta + 3) =0 then sin theta - 1 = 0 sin thate = 1 theta = 90 degree and also 5 cos theta + 3 = 0 5 cos theta = -3 cos theta = -3/5 theta = arc cos (-3/5) use your calculator!

  3. Sophiel44
    • 3 years ago
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    how come you can do it in 2 separate parts? surely you cannot leave out half the equation? or can you?

  4. gerryliyana
    • 3 years ago
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    because multiplication both of them equals zero.., then one and second of them equals zero too!

  5. Sophiel44
    • 3 years ago
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    ahh yes thanksss so much!!!

  6. gerryliyana
    • 3 years ago
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    your welcome

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