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kcla1996

  • 2 years ago

Use the diagram to find sin X as a fraction in simplest form.

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  1. kcla1996
    • 2 years ago
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  2. geoffb
    • 2 years ago
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    Okay, what is the sin function? What two sides?

  3. kcla1996
    • 2 years ago
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    um im not too sure

  4. geoffb
    • 2 years ago
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    SOHCAHTOA. Remember that for the rest of your life. ;)

  5. geoffb
    • 2 years ago
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    Sin = Opposite / Hypotenuse Cos = Adjacent / Hypotenuse Tan = Opposite / Adjacent You will use those a lot.

  6. kcla1996
    • 2 years ago
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    what? haha

  7. kcla1996
    • 2 years ago
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    i still don't get it....

  8. geoffb
    • 2 years ago
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    Do you know what opposite and adjacent mean, relative to the angle, X, in the triangle?

  9. kcla1996
    • 2 years ago
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    idk if this is right: adjacent is 36 opposite is 60 and hypotenuse is 48 ?

  10. geoffb
    • 2 years ago
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    You're right about adjacent. The other two, you have mixed up. Opposite will always be the only side of the triangle that doesn't touch the angle you're looking at. The hypotenuse (in a right angle triangle) is always the side across from (not touching) the right angle. Also, the hypotenuse will *always* be the longest side.

  11. kcla1996
    • 2 years ago
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    sin: 48/60 cos: 36/60 tan: 48/36 is this correct?

  12. geoffb
    • 2 years ago
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    Yes! You've got the premise. The only issue is with how you've written it. Technically, the value of your angle (in degrees) is equal to sin(48/60), cos(36/60), or tan(48/36).

  13. geoffb
    • 2 years ago
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    You know X = sin(48/60), all that's left is the question asks for a fraction in simplest form.

  14. kcla1996
    • 2 years ago
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    4/5

  15. geoffb
    • 2 years ago
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    Sorry, I was thinking backward. It's not X = sin(4/5). It's sin X = 4/5. So yes, that is perfect.

  16. kcla1996
    • 2 years ago
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    thankies!! ;D

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