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anonymous

  • 4 years ago

Difficult Question. Look at Diagram

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  1. anonymous
    • 4 years ago
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    |dw:1327459900782:dw|

  2. anonymous
    • 4 years ago
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    find h

  3. anonymous
    • 4 years ago
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    <A = 47 <B = 42 AB = 200m

  4. Hero
    • 4 years ago
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    Find angle B, apply law of cosines and law of sines

  5. anonymous
    • 4 years ago
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    Use SOH CAH TOA Tan(47)=h/100 type this into your calculator: 100*tan(47) thats your answer :)

  6. anonymous
    • 4 years ago
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    <B is already given . it is 42

  7. Hero
    • 4 years ago
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    I meant angle D

  8. Mertsj
    • 4 years ago
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    @Brent Are you sure that h bisects the base AB?

  9. anonymous
    • 4 years ago
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    Brent, AC and AB are not equal

  10. anonymous
    • 4 years ago
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    AC and CB *

  11. anonymous
    • 4 years ago
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    <D = 62 , what next ?

  12. Hero
    • 4 years ago
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    Apply law of sines

  13. Mertsj
    • 4 years ago
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    angle BDC= 48 degrees angle ADC = 43 degrees

  14. Mertsj
    • 4 years ago
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    angle ADB = 91 degrees

  15. Mertsj
    • 4 years ago
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    \[\frac{\sin 91}{200}=\frac{\sin47}{DB} DB = 146.3\]

  16. Mertsj
    • 4 years ago
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    \[\frac{\sin 48}{BC}=\frac{\sin90}{146.3} BC=111.0\]

  17. Mertsj
    • 4 years ago
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    \[\frac{\sin 42}{h}=\frac{\sin48}{111} h = 100.0\]

  18. anonymous
    • 4 years ago
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    Im sorry i couldnt tell whether or not they were equal

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