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6 steps: (1) In a right triangle, pick one acute angle (θ). Name the sides relative to it: OPPOSITE (across from θ), ADJACENT (next to θ, not hypotenuse), HYPOTENUSE (longest, opposite right angle). (2) SINE = Opposite/Hypotenuse (SOH). (3) COSINE = Adjacent/Hypotenuse (CAH). (4) TANGENT = Opposite/

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