Select the correct steps to complete the proof of the identity. (sint – cos cos t)? = 1– sin (2t) Proof: Step 1: (sint – cost)² = : (sint – cost) (sint – cos t) Step 2: sin' t - cos?t = sin? t – 2 cost sint – cos² t = sin? t – 2 cost sin t + cos? t = sin t + 2 cost sint + cos? t

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