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Math Help - 2 Trig Questions - easy plz help :)

  1. #1
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    2 Trig Questions - easy plz help :)

    lol ok... i have all of these questions because i have a test tomorrow and i haven't been paying attention so... i'm cramming >_< ok two pretty easy questions this looks like.

    1) Find cot θ, if tan θ = 0.2764.




    2) Use a calculator to find the function value cot 37.4
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by HelpMePleaseFriend View Post
    lol ok... i have all of these questions because i have a test tomorrow and i haven't been paying attention so... i'm cramming >_< ok two pretty easy questions this looks like.

    1) Find cot θ, if tan θ = 0.2764.




    2) Use a calculator to find the function value cot 37.4
    recall that \cot \theta = \frac 1{\tan \theta}
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  3. #3
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    ermm

    still dunno man >_< i don't have any notes for this :S
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  4. #4
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    Quote Originally Posted by HelpMePleaseFriend View Post
    lol ok... i have all of these questions because i have a test tomorrow and i haven't been paying attention so... i'm cramming >_< ok two pretty easy questions this looks like.

    1) Find cot θ, if tan θ = 0.2764.
    \cot \theta = \frac 1{\tan \theta} = \frac 1{0.2764}

    now plug that into your calculator and work it out


    2) Use a calculator to find the function value cot 37.4
    \cot 37.4^o = \frac 1{\tan 37.4^o}

    now plug that into your calculator
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  5. #5
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    hmmm

    im not getting the right answer.. i don't know why >_< i've been trying forever i can't seem to get the correct answer.
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  6. #6
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by HelpMePleaseFriend View Post
    im not getting the right answer.. i don't know why >_< i've been trying forever i can't seem to get the correct answer.
    for the first: \cot \theta = 3.617945

    for the second, \cot 37.4^o = 1.3079457

    i don't know what to tell you, from here it's just plugging into your calculator. are you sure you're inputting it correctly?
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  7. #7
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    yeah

    i have the correct answers here but i'm not plugging it in right. i don't know what i'm missing >_< how do i plug these in?
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  8. #8
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by HelpMePleaseFriend View Post
    i have the correct answers here but i'm not plugging it in right. i don't know what i'm missing >_< how do i plug these in?
    my calculator may not work the same way yours does:

    for the first, i entered: \boxed{1}~ \boxed{ \div }~ \boxed{0} ~\boxed{.}~ \boxed{2}~ \boxed{7} ~\boxed{6}~ \boxed{4}

    it looks like 1 \div 0.2764 on my display screen


    for the second i entered: \boxed{1} ~\boxed{\div} ~\boxed{ (}~ \boxed{ \mbox{tan}}~ \boxed{(}~ \boxed{3}~ \boxed{7}~ \boxed{.} ~\boxed{4}~ \boxed{)} ~\boxed{)}

    it looks like 1 \div ( \tan (37.4) ) on my display screen
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  9. #9
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    ummm

    i'm getting the correct answer for the first one but not the second.

    it's making me go crazy :S
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  10. #10
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by HelpMePleaseFriend View Post
    i'm getting the correct answer for the first one but not the second.

    it's making me go crazy :S
    make sure your calculator is in degrees mode, it may be set to radian mode or something
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  11. #11
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    yeah

    it was in rads >_< lol that was the problem... wow ... lol oh god >_< thanks man.
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