Positive Value of x

What is a positive value of x for which 9^(-cos x) = 1/3?

NOTE: The (-cos x) is the exponent in this case.

Quote:

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Originally Posted by magentarita

What is a positive value of x for which 9^(-cos x) = 1/3?

NOTE: The (-cos x) is the exponent in this case.

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I'll nudge you in the right direction:



Note that and

So we can rewrite the equation as this:

I'm sure you can take it from here.

--Chris

Quote:

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Originally Posted by Chris L T521

I'll nudge you in the right direction:



Note that and

So we can rewrite the equation as this:

I'm sure you can take it from here.

--Chris

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Yes, I can. Thank you.