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IloveCharlie

  • 2 years ago

Please help! Given: sinA=-3/5, cosB=15/17, angle A in Quadrant III and angle B in Quadrant I. cos2B= a. -64/289 b. 161/289 c. 225/289 d. 240/289

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  1. NotTim
    • 2 years ago
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    eh...did you do wat I told you to do last time? def help you much

  2. IloveCharlie
    • 2 years ago
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    I tried it but for some reason this problem is harder than the last :/ I'll ask around

  3. NotTim
    • 2 years ago
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    is your calc in deg or rad?

  4. IloveCharlie
    • 2 years ago
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    Degree

  5. NotTim
    • 2 years ago
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    that MIGHT be it...im not sure

  6. IloveCharlie
    • 2 years ago
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    Would you be able to go through the problem with me step by step or should I just keep asking for help? It's fine if you can't :)

  7. NotTim
    • 2 years ago
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    eh...im no good at math.

  8. NotTim
    • 2 years ago
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    but, YOU DID find that circle pi chart right?

  9. IloveCharlie
    • 2 years ago
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    Yup, thanks

  10. NotTim
    • 2 years ago
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    well...sorry i couldn't help much. but good luck eh

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