4. Shown below is a diagram showing an original triangle (pink) and its rotation about one vertex through an angle of radians. -sin 0 sin 0+ 1 = cos 0 cos(0 + 7) = Using the diagram, explain these formulas cos 0 -sin 0 R 10+- 1 cos 0 sin 0

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A: Topic = Trigonometry

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A: Please refer to the image below

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A: Topic- trigonometry

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A: topic - Law of sines

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A: Topic:- trigonometry