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Mathematics 8 Online
OpenStudy (cieloveswork):

helppp please ...

OpenStudy (hippoharry):

how can i help?

OpenStudy (cieloveswork):

What is the cosine of angle X? |dw:1467258929947:dw| A) \[\frac{ 40 }{ 41}\] B) \[\frac{ 9 }{ 40}\] C) \[\frac{ 9 }{ 41 }\] D)\[\frac{ 41 }{ 40 }\]

OpenStudy (unklerhaukus):

is there a right angle?

OpenStudy (unklerhaukus):

|dw:1467259226515:dw|

OpenStudy (cieloveswork):

idk thats why im asking on here

OpenStudy (cieloveswork):

@UnkleRhaukus can you please help me3 i have 24 hrs to finish 4Qs of a school year in aglebra to pass to the 10th grade i really need help

OpenStudy (unklerhaukus):

well it looks like a right angle,

OpenStudy (cieloveswork):

whats the answer i have answer choices up there

OpenStudy (unklerhaukus):

cosine (angle) = adjacent side / hypotenuse

OpenStudy (cieloveswork):

so its A)

OpenStudy (unklerhaukus):

|dw:1467259560636:dw|

OpenStudy (cieloveswork):

thx u

OpenStudy (unklerhaukus):

we need to know the length of the adjacent side, we can use pythag. adj^2+opp^2 = hypo^2 adj = √ (hypo^2-opp^2)

OpenStudy (cieloveswork):

thx you i got the answer

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