Answer 4.3:7

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(Ny sida: {| width="100%" cellspacing="10px" |a) |width="100%" | <math>\sin{(x+y)}=\displaystyle \frac{4\sqrt{2}+\sqrt{5}}{9}</math> |- |b) |width="100%" | <math>\sin{(x+y)}=\displaystyle \frac{3\sq...)
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Revision as of 09:12, 3 April 2008

a) \displaystyle \sin{(x+y)}=\displaystyle \frac{4\sqrt{2}+\sqrt{5}}{9}
b) \displaystyle \sin{(x+y)}=\displaystyle \frac{3\sqrt{21}+8}{25}