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16 votes
Very confused on this, could someone please help? I’m currently in pre calculus if that helps!

Very confused on this, could someone please help? I’m currently in pre calculus if-example-1
User Fitch
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1 Answer

24 votes
24 votes

  • tan x<0 lies in second quadrant

sec x =3/4

  • cosX=1/secx=4/3


\\ \tt\Rrightarrow sin x=√(1-(4/3)^2)=√(1-16/9)=√(-7/9)=√7/3i[/tex]

Now

  • tanx=(√7/3i)(4/3)=√7/4i
User Thell
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