cos-1 x + sin-1 1/root5 =pi/4
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sin^-1(1/root 5) +sin^-1(1/root 10)=sin^-1(5/root 50)=sin^-1(1/root 2) =pie/4
sarbjeetsinghg2:
bhai copy pe nikal k dikhao pura or pic bhejo ase smjh nhi aa rha
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