why does arcsin(2x) + arccos(x) = PI / 6?

our teacher wants us to show this using identities, not literally finding a solution for (x)

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- Mar 30th 2009, 03:05 PMlazyboy292extra credit
**why does arcsin(2x) + arccos(x) = PI / 6?**

our teacher wants us to show this using identities, not literally finding a solution for (x)

- Mar 30th 2009, 03:15 PMPlato
- Mar 30th 2009, 03:37 PMlazyboy292
arcsin 2x = PI/6 - arccos x

2x = sin(PI/6 - arccos x)

thats all ive gotten so far - Mar 30th 2009, 10:10 PMmr fantastic