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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 that helps!
asked 26.9k views
21 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
asked
User Martin Hollingsworth
by
8.7k points

1 Answer

1 vote

  • 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
answered
User DrLazer
by
7.9k points
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