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OpenStudy (anonymous):
find tan x/2 given tan x= -3 and 90
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OpenStudy (anonymous):
So the question is asking what is tan (-3/2)?
OpenStudy (anonymous):
No we are suppose to use a half angle identity, however i am not sure what one to use to solve this problem, The answer should be (sqrt10)+1 divided by 3 im just not sure how to get there
OpenStudy (anonymous):
|dw:1374625541688:dw| it is a quadratic equation in terms of tan(x/2) take tan(x/2)=y and solve for y will will probably get 2 values for y. select the +ve one, because y=tan(x/2) and tan(x/2) is positive in the domain. can you proceed?
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