eroshea
tan(arctanx + arctan 1/4)=7/11, find x



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Reyjuanx10
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You should get the inverse of it

Reyjuanx10
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trololololol

eroshea
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hahahaha!

eroshea
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i already did that and i just want to make sure that my answer is correct :))

Reyjuanx10
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nakita nga lang kita eh

Reyjuanx10
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ang susungit naman ng mga tao dito

eroshea
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kala mo lang un.. may mabait dito :))

estudier
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just use tan double angle formula.....

hartnn
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arctanA + arctan B = arctan((A+B)/(1AB))

eroshea
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wait.. i'm confused @_@

sarihmanlapaz
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i'm confused too

Reyjuanx10
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mee too

hartnn
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arctanx + arctan 1/4 = arctan((x+1/4)/(1x/4))
tan(arctanx + arctan 1/4) = (x+1/4)/(1x/4) =7/11

hartnn
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now can u find x ?
(x+1/4)/(1x/4) =7/11