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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!
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
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
User DrLazer
by
7.9k points
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