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**great_math****Member**- Registered: 2008-10-07
- Posts: 5

Find the values of p for which the equation

has a solution*Last edited by great_math (2009-06-23 00:12:49)*

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**soroban****Member**- Registered: 2007-03-09
- Posts: 452

. .

. .

.

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Sorry soroban, but it should actually be

And that doesn't really simplify things.

Why did the vector cross the road?

It wanted to be normal.

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**Kurre****Member**- Registered: 2006-07-18
- Posts: 280

use the formula on http://en.wikipedia.org/wiki/Trig_identities#Linear_combinations

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