p215 q10

thanks

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- March 25th 2008, 08:38 AMafeasfaerw23231233trigo problem no. 24 [general solution]
p215 q10

thanks - March 25th 2008, 09:50 PMafeasfaerw23231233
i didn't treat cos 2x as cos ^2 x

- March 26th 2008, 02:51 AMmr fantastic
1. Your answer of is correct, the book's answer of misses solutions and so is not completely correct .....

2. and are correct exact values. Your corresponding answers are only decimal approximations to these exact answers. But it's a bit tough to expect someone to know these exact values!!!!

It's possible to prove that these are the exact values but it's a bit complicated. - March 26th 2008, 03:53 AMtopsquark