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mathsteddybear

  • 3 years ago

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 ! ^^

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

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

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

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

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

  7. mathsteddybear
    • 3 years ago
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    31.054° ?

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

  9. mathsteddybear
    • 3 years ago
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    2.62 ° ! omg thank you so much ! ^^

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

  11. mark_o.
    • 3 years ago
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    yup it looks like the 2.3 is an arc

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