cosA+sinA=√2sin(90-A) change to cotA
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Cos A + Sin A = √2 × Sin ( 90 - A )
Cos A + Sin A = √2 × Cos A
Sin A = √2 × Cos A - Cos A
Sin A = Cos A ( √2 - 1 )
Cos A + Sin A = √2 × Cos A
Sin A = √2 × Cos A - Cos A
Sin A = Cos A ( √2 - 1 )
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