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0. A. 0. = 0, = - /2 => - = /2. Acos( 0 t) = Asin( 0 t + /2). 0 /4 => 0 t = /2. Acos( 0 t - /2) = Asin( 0 t). Acos( 0 t – (1+/2)) = Asin( 0 t-1).
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0 A 0 • = 0, = - /2 => - = /2 Acos(0t) = Asin(0t + /2)
0/4 => 0t = /2 Acos(0t - /2) = Asin(0t)