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Can someone kindly help to find the exact values of cosx and sinx when tanx=2..

- Thread starter Mathslova
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Can someone kindly help to find the exact values of cosx and sinx when tanx=2..

- #2

Moonbear

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In what kind of problem might the expression tan x=2 occur?

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cristo

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arildno

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[tex]\tan^{2}(x)+1=\frac{1}{\cos^{2}(x)}[/tex]

If you are not familiar with that result, you should try to prove it first.

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Hootenanny

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You don't need any identities to solve the system. Start by finding *x*...

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Very much appreciated...I used SOHCAHTOA and got the answer I was looking for

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HallsofIvy

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Yes, Cristo's answer was the simplest method.

(Darn, he got it in ahead of me!)

(Darn, he got it in ahead of me!)

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Ideally, the OP would have used my hint.

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HallsofIvy

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In what kind of problem might the expression tan x=2 occur?

I understand your point, but I can think of many problems involving tan x= 2 (or other values of tan x) that have nothing to do with right triangles.Ideally, the OP would have used my hint.

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