If A=[cos2αcosα sinαcosα sinαsin2α] and B=[cos2βcosβ sinβcos� – InterviewSolution

1.	If A=[cos2αcosα sinαcosα sinαsin2α] and B=[cos2βcosβ sinβcosβ sinβsin2β] are two matrices such that AB is the null matrix, then
Answer» $I f A = [\begin{matrix} c o s^{2} α & c o s α s i n α c o s α s i n α & s i n^{2} α \end{matrix}] a n d B = [\begin{matrix} c o s^{2} β & c o s β s i n β c o s β s i n β & s i n^{2} β \end{matrix}]$ are two matrices such that AB is the null matrix, then

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