If sin 0 + cos 0 =1 then find the general value of 0.
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sin A + cos A = 1
sin^2 A + cos^2 A + 2 cos A sin A = 1
so Sin 2A = 0
2A = n π
A = n π/2
sin^2 A + cos^2 A + 2 cos A sin A = 1
so Sin 2A = 0
2A = n π
A = n π/2
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