Question

cos(45-A).cos(45-B)-Sin(45-A).Sin(45-B)Formula put this question proved Answer)

Answer 1

Louisa Mebbin had a very protective elderly sister attitude towards money. She was a great lover of money.Louisa always saved money wherever possible.Many a times she saved roubles,centimes and francs by not tipping. She is not a spendthrift person.And thus,Louisa's attitude towards money is similar to the protective attitude of an elder sister towards her younger sibling