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anonymous

  • one year ago

Find all solutions in the interval [0, 2π). cos x = sin x x = three pi divided by four., five pi divided by four. x = pi divided by four., seven pi divided by four. x = three pi divided by four, seven pi divided by two x = pi divided by four, five pi divided by four. @sithsandgiggles

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  1. Nnesha
    • one year ago
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    welll can you take a screenshot ?

  2. anonymous
    • one year ago
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    wont let me

  3. Nnesha
    • one year ago
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    why not ?

  4. Nnesha
    • one year ago
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    check your equation please :-)

  5. anonymous
    • one year ago
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    i just can't.. others always help me without a screenshot or anything

  6. Nnesha
    • one year ago
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    alright...

  7. anonymous
    • one year ago
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    so can u help me?

  8. anonymous
    • one year ago
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    cuz i understand if u cant

  9. Nnesha
    • one year ago
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    yeah i'm going to help you i just wanted to make sure that equation is correct :-)

  10. anonymous
    • one year ago
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    alright i can retype it. it's cos x = sin x :-D

  11. Nnesha
    • one year ago
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    alright set it equal to one divide both sides by cos

  12. anonymous
    • one year ago
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    i dont know how to do any of this :/

  13. anonymous
    • one year ago
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    i'm so sorry

  14. Nnesha
    • one year ago
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    alright there is another easy way to find x values sin(x) = cos (x) in unit circle sin x = y coordinate cos (x) = x coordinate so you can replace sin (x) by y and cos (x) by x x=y now now at what angle x and y values are same ??

  15. Nnesha
    • one year ago
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    http://prntscr.com/7f4tf7

  16. anonymous
    • one year ago
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    45 degrees

  17. Nnesha
    • one year ago
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    yes there is one more !

  18. anonymous
    • one year ago
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    and 225 degrees

  19. Nnesha
    • one year ago
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    yep you can convert those two angles to radians by using this formula \[\huge\rm d \times \frac{ \pi }{ 180 }\] or you can cheat(use unit circle )

  20. Nnesha
    • one year ago
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    :-)

  21. anonymous
    • one year ago
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    lol umm.. x = pi divided by four, five pi divided by four? @Nnesha

  22. Nnesha
    • one year ago
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    yes right

  23. Nnesha
    • one year ago
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    and here is a link https://www.youtube.com/watch?v=ww5pnpVGejk

  24. anonymous
    • one year ago
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    WOOOOW! that was easier than i thought!

  25. anonymous
    • one year ago
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    thank you so much! may I please get a medal?

  26. Nnesha
    • one year ago
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    np :-)

  27. anonymous
    • one year ago
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    :)

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