Solve for x: (16/81)^(sin^2 x) + (8/9)^(cos^2 x) = 26/27

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- July 31st 2009, 07:10 PMpacmandifficult sin x function
Solve for x: (16/81)^(sin^2 x) + (8/9)^(cos^2 x) = 26/27

- August 1st 2009, 04:16 AMOpalg
- August 1st 2009, 04:44 PMKrahl
ok say instead of 26/27 it was 3/2.

how can you solve it for an exact soln? w/o using any approximating methods - August 2nd 2009, 01:38 AMsimplependulum
- August 10th 2009, 02:46 AMpacman
i plot this one: y = (16/81)^(sin^2 x) + (8/9)^(cos^2 x) for x =0 to pi radian. In my graph it looks like this, any comments?

- August 10th 2009, 02:50 AMpacman
and this one, (16/81)^(sin^2 x) + (8/9)^(cos^2 x) = 26/27; what does it mean?

- August 10th 2009, 09:38 AMFailure
- August 10th 2009, 09:43 AMFailure
- August 11th 2009, 07:12 AMpacman
your observation is quite alright with me, thanks