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anonymous

  • one year ago

simplify the trigonometric expression? sin^2(theta)/1- cos(theta)

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  1. Nnesha
    • one year ago
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    trig identity sin^2 theta = what ?

  2. anonymous
    • one year ago
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    Just a suggestion, but go to mathway.com and it solves most problems your stuck on and helps break stuff down

  3. anonymous
    • one year ago
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    i know sin (theta) = 1/csc(theta)

  4. Nnesha
    • one year ago
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    just becareful sometimes it will give u the wrong answer js :)

  5. Nnesha
    • one year ago
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    identity \[\huge\rm sin^2 \theta + \cos^2 \theta = 1 \] solve this for sin^2 theta

  6. anonymous
    • one year ago
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    oh yeah, i forgot about that! sin^2 (theta) = 1-cos^2(theta)

  7. anonymous
    • one year ago
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    Yeah you have to be exact with it and sometimes it wont give you the answer so, Yeah:) very helpful though still

  8. Nnesha
    • one year ago
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    yep right now apply difference of square method \[\huge\rm a^2 - b^2 = (a+b)(a-b)\]

  9. anonymous
    • one year ago
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    (1 + cos (theta))(1-cos(theta))?

  10. anonymous
    • one year ago
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    so the answer is 1 + cos(theta)?

  11. Nnesha
    • one year ago
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    yep right \[\huge\rm \frac{ (1 - \cos \theta )(1+ \cos \theta)}{ 1-\cos \theta }\]

  12. Nnesha
    • one year ago
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    yes right

  13. anonymous
    • one year ago
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    cuz 1 - cos(theta) cancels out

  14. anonymous
    • one year ago
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    thanks!

  15. Nnesha
    • one year ago
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    np :-)

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