2016-II-03
Ans: D
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& 16 – (2x-3y)^2 \\
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AB^2 + BD^2

Since $A

I is true. Let $\theta$ be the angle of the sector $OAB$

Since $ABCD$, $CDEF$ and $EFGH$ are squares, then we h

Add points $E$ and $F$ on $AD$ and $CD$ respectively, s

Since $ABCD$ is a rhombus, then we have $BC\text{//}A
