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mathsteddybear

Emaths trigo question ! Can someone help to solve Q20 in the attached file ? please explain to me how to get the answers provided, thank you ! ^^

  • one year ago
  • one year ago

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  1. mathsteddybear
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    • one year ago
  2. mark_o.
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    whats sin^-1(1/2)= ____radian?

    • one year ago
  3. mark_o.
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    arc sin(1/2)= ____radian?

    • one year ago
  4. mark_o.
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    sin x=1/2 then x=arc sin(1/2)=___radian?

    • one year ago
  5. mathsteddybear
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    i can only get the ans 0.524 but cant get the other answer :(

    • one year ago
  6. mark_o.
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    ok lets try to do this like this whats 0.524 rad in degrees?

    • one year ago
  7. mathsteddybear
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    31.054° ?

    • one year ago
  8. mark_o.
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    its 30 degrees correct? then to find the other theta in degrees would be 180 deg - 30deg = a50 deg=___rad?

    • one year ago
  9. mathsteddybear
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    2.62 ° ! omg thank you so much ! ^^

    • one year ago
  10. mathsteddybear
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    so the diagram is actually useless right ? >< only the bottom statement is needed to solve

    • one year ago
  11. mark_o.
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    yup it looks like the 2.3 is an arc

    • one year ago
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