已知a,b属于（x+pai/3),sin(a+b)=-3/5,sina(b-pai/4)=12/13,则cos(a+pai/4)=?

已知a,b属于（x+pai/3),sin(a+b)=-3/5,sina(b-pai/4)=12/13,则cos(a+pai/4)=?
已知a,b属于（x+pai/3),sin(a+b)=-3/5,sina(b-pai/4)=12/13,则cos(a+pai/4)=?

已知a,b属于（x+pai/3),sin(a+b)=-3/5,sina(b-pai/4)=12/13,则cos(a+pai/4)=?
The Hamiltons often forage for food with other "free economy" people in Bristol.For example the Leigh Woods near the city yield abundant berries and fruit.
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In the frozen food supermarket's bay are 10 blue dumpsters.The amount of food that has been thrown out is immense.In one skip there are at least 30 sliced Kingsmill loaves,within their sell-by date and with packaging intact (0.00085pc of Mr Brown's 7m wasted daily slices).
Thursday nights are the best,bulgari watches,as that is when M&S apparently bins the most grub (some of which it covers in blue dye to stop bin-divers).
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"I felt that I was being paid to manipulate people [in the marketing job] and create products that didn't really exist.So I just thought 'I am going to take some breathing space'," he says.
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The mattress came from Freecycle.org,a free online exchange site.All he paid for were the screws to put it together."The entire bed cost me less than £3," he boasts.
The cost of this food in the shop would be around £25,cartier watch tank,I estimate.
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"Look at the papers.They are dominated by the credit crisis and the global food crisis and concerns over the environment,this is major stuff occurring," he says.
As a rule,Marks & Spencer bins provide the gold standard for dumpster diving.
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The Gianstefanis say that this is nothing - they once found a bin full of fresh,chilled Canadian lobster outside an M&S."We had a party," Mrs Gianstefani says.
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Existing freegans say that people are joining their ranks by the week.But these are not dippy hippies or trampy hobos.They are educated people who have decided to seek an alternative way of life outside the economic norms.
Mr Gianstefani says that everyone should try freegansim."We are all responsible.It would be good if Gordon Brown did some bin raiding," he says,adding that his lifestyle makes him feel "like an adventurer on a permanent camping trip".
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Earlier this month Prime Minister Gordon Brown complained that Britons throw out £10bn of food each year.This includes 7m slices of bread and 4.4m apples each day.
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Sleep is cheap for Dave Hamilton.That's because the Bristolian paid almost nothing for his king-sized wooden bed.Mr Hamilton salvaged the bed frame from a skip.
"Look at this.It still surprises me and shocks me," says Mr Gianstefani.
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The couple only take a small amount of food on this occasion,bulgari watch,leaving the vast majority for other divers.
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Back in Ireland,Alf agrees."More and more people are beginning to wake up.
The couple's cash outlay each year is less than £2,000 and much of that goes on van maintenance.
A freegan called Alf is driving around Ireland in his camper van,which runs on waste vegetable oil,when I catch up with him.Alf,who declined to give his surname,has been a freegan since he quit his job as an account executive at a London marketing design company in 1999.Alf studied experimental psychology at New College,Oxford.He is resolutely middle-class and loves the freegan lifestyle.
He and fellow freegans share resources ("apart from underwear and toothbrushes").Being a freegan is about reassessing needs,MBT shoe,bartering,sharing and clamping down on wastage,says Alf."The amount of food we find round the back of supermarkets is colossal.One time I found a whole bin bag of cider.Friends found 150 frozen chickens,steaks and cheeses."