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Home Q & A Board Science-Related Homework Help Mathematics
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o.avworo o.avworo
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11 years ago
If Cot ?=3/4 and ? is in quadrant III, Find Cot 2?.

For some reason i'm running into problems with this one, any help would be much appreciated!
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wrote...
#1
11 years ago
cot ? = 3/4

=> tan ? = 4/3

cot(2?) =  (1 - tan^2(?)) / 2 tan(?)

= (1 - (16/9)) /2(4/3)

= - 7/9(8/3)

= - 7/24
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