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Mathematics 7 Online
OpenStudy (anonymous):

Which of the following is a solution to tanx+3 √ =0 ?

OpenStudy (anonymous):

Sorry, I can't see it very clearly. Is it \(tan x +\sqrt3 = 0\)?

OpenStudy (anonymous):

yes it is

OpenStudy (anonymous):

So \(tanx = -\sqrt3\), right? Now we can use the inverse function.

OpenStudy (anonymous):

yes correct

OpenStudy (anonymous):

So \(x=tan^{-1}(-\sqrt3)\). Can you find x?

OpenStudy (anonymous):

is it 150

OpenStudy (anonymous):

I think it is 120

OpenStudy (anonymous):

120 is not an option 150, 60, 240, or 300

OpenStudy (anonymous):

Tangent function repeats every 180, so you can easily calculate the next value.

OpenStudy (anonymous):

120+180

OpenStudy (anonymous):

300

OpenStudy (anonymous):

Yes. You can also look at the unit circle. \(tan(300) =-\sqrt3\) too

OpenStudy (anonymous):

i dont have a unit circle with me but you are correct thank you so much

OpenStudy (anonymous):

You are welcome.

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