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    Hey guys,

    I find its impossible for me to get the right answer so I have come here :cool:

    I get theta= 46.9 which is right however theta is between -180 and 180. The other answer is apparently -75 however I have no clue how to reach it
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    should we try to guess what the question is?

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    It'd be helpfull if you gave us more info on the question. Theres no way we can tell you what you've done with it. Though i'm guessing you need to draw the graphs on sin or cos and see that you've missed a value somewhere.
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    (Original post by DeterminedOne)
    Hey guys,

    I find its impossible for me to get the right answer so I have come here :cool:

    I get theta= 46.9 which is right however theta is between -180 and 180. The other answer is apparently -75 however I have no clue how to reach it

    And the actual question is.......?
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    We do maths, not angels mate.
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    They come from hell?
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    Root 17 cos (theta +14) = 2. soz, forgot to add tht
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    Surely negative angels are demons ?
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    Jeez, i thought this was some sort of god thing. ¬_¬
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    (Original post by DeterminedOne)
    Root 17 cos (theta +14) = 2. soz, forgot to add tht
    cos(\omega + 14) = \frac {2}{\sqrt 17}

    \mu = \omega + 14

    cos(\mu) = \frac {2}{\sqrt 17}

    \mu = cos^{-1}(\frac {2}{\sqrt 17})

    find the values of \mu and then subtract 14 from them
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    And lo the negative angels did spew forth from the valleys of darkness and theta was 46.9 which the lord did look down upon and see that it was good. But lo he did not see -75 and he did not know to whence it had departed thus the beast rose and the seas boiled and bright striped pink unicorns rode across the land to which mankind despaired.
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    (Original post by Pheylan)
    cos(\omega + 14) = \frac {2}{\sqrt 17}

    \mu = \omega + 14

    cos(\mu) = \frac {2}{\sqrt 17}

    \mu = cos^{-1}(\frac {2}{\sqrt 17})

    find the values of \mu and then subtract 14 from them
    Thank you for your response, I got theta = 46.9 degrees as 1 answer however I have an issue when the range goes into negative, eg if theta was between 0 and 360 I would minus 46.9 from 360 to find the other value. However due to the range being negative (-180 and 180) I can't get the other answer
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    (Original post by DeterminedOne)
    Thank you for your response, I got theta = 46.9 degrees as 1 answer however I have an issue when the range goes into negative, eg if theta was between 0 and 360 I would minus 46.9 from 360 to find the other value. However due to the range being negative (-180 and 180) I can't get the other answer
    umm i got 60.98 for the equation i posted
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    (Original post by Pheylan)
    umm i got 60.98 for the equation i posted
    I also got that, then took away 14 to get theta as (theta +14) = 60.98
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    cos(60.98) = cos(299.02) = cos(-60.98) = 2/17^(1/2)
    theta + 14 = -60.98
    theta = -60.98 - 14 = -74.98
    = -75 to 2s.f.
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    Thanks Pheylan and andym1988
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    (Original post by DeterminedOne)
    I also got that, then took away 14 to get theta as (theta +14) = 60.98
    oh yeah :facepalm:
 
 
 
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