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loser0123456

  • 3 years ago

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  1. loser0123456
    • 3 years ago
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    I have an opposite leg of a right triangle that is 40mm long, I have an adjacent leg of 165mm what is the measure of angle a which is the angle in between the hypotenuse and the adjacent leg

  2. loser0123456
    • 3 years ago
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    what is the sine, cosine, and tangent ratios for ∠ A.

  3. DingusBrain
    • 3 years ago
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    i wont give u the answer but i will help you

  4. loser0123456
    • 3 years ago
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    ok that is what I wanted

  5. DingusBrain
    • 3 years ago
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    first of all we need to use cosine since were dealing with adjacent/hypotenuse

  6. DingusBrain
    • 3 years ago
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    what we first want to do tho is use tangent to find the length of the hypotenuse

  7. DingusBrain
    • 3 years ago
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    actually for the hypotenuse we could do a^2=b^2=c^2

  8. loser0123456
    • 3 years ago
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    the length is about 170

  9. begzat
    • 3 years ago
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    But he need to find the angle

  10. begzat
    • 3 years ago
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    not the hypotenuse

  11. DingusBrain
    • 3 years ago
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    begzat

  12. DingusBrain
    • 3 years ago
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    to find the angle you need to find the hypotenuse

  13. begzat
    • 3 years ago
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    no

  14. DingusBrain
    • 3 years ago
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    yep

  15. DingusBrain
    • 3 years ago
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    169.78 is the length of the hypotenuse

  16. loser0123456
    • 3 years ago
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    the hypotenuse is 170 so we dont need to find it

  17. begzat
    • 3 years ago
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    do you know what is Trigonometric Ratios

  18. DingusBrain
    • 3 years ago
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    alright then from there is pretty simple

  19. loser0123456
    • 3 years ago
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    i rounded

  20. begzat
    • 3 years ago
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    if you know Trigonometric Ratios formula you can find very easy the angle

  21. loser0123456
    • 3 years ago
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    ok but what are the steps i forgot

  22. begzat
    • 3 years ago
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    okay i will post the formulas and you will find wich one you need to use

  23. loser0123456
    • 3 years ago
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    ok

  24. begzat
    • 3 years ago
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    sin=opposite leg/ hypotenuse cos=adjacent leg/hypotenuse tan=opposite leg/ adjacent leg

  25. begzat
    • 3 years ago
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    know which one you need to use

  26. begzat
    • 3 years ago
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    now***

  27. loser0123456
    • 3 years ago
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    so I need to use cosine

  28. begzat
    • 3 years ago
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    no because you know opposite and adjacent leg

  29. loser0123456
    • 3 years ago
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    i also know hypotenuse it is 170

  30. begzat
    • 3 years ago
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    but on the question it said that you know opp. and adj.

  31. begzat
    • 3 years ago
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    you can use tan if you want

  32. loser0123456
    • 3 years ago
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    I forgot to post the hypotenuse

  33. begzat
    • 3 years ago
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    okay so you can use all

  34. loser0123456
    • 3 years ago
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    but which one helps me find my angle

  35. begzat
    • 3 years ago
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    all

  36. begzat
    • 3 years ago
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    you can use tan=opp./adjacent leg

  37. loser0123456
    • 3 years ago
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    well can you help me with the steps for cos

  38. Directrix
    • 3 years ago
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    >well can you help me with the steps for cos The cosine of an acute angle of a right triangle is the ratio of the length of the leg adjacent to the hypotenuse to the hypotenuse length. cos(A) = 165/169.78 cos(A) = 0.9718459 approx A = ? |dw:1362220656246:dw|

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