Posted by **Abhishek Mishra** on Wednesday, January 26, 2011 at 10:10pm.

(sinx)^8 + (cosx)^8=17/32

- Maths,Science -
**Reiny**, Thursday, January 27, 2011 at 12:30am
I give up.

I have several pages of messy identity calculations, and am not getting anywhere.

so tried some guesses:

x -------- RS = 17/32 = .53125

.25 --- .776

.5 -----.35

.4 ---- .5185

.39 --- .5359

.395 --- .5272

.3935 --- .5298

so there seems to be a solution around x = .3935

I would be interested to know how to do this question.

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