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cos 90^(@)

cos⁡90∘ \cos 90^{\circ}

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Q. cos⁡90∘ \cos 90^{\circ}
  1. Identify cosine value: Identify the value of cosine at 9090 degrees.\newlineThe cosine function represents the xx-coordinate of a point on the unit circle at a given angle. At 9090 degrees, the point on the unit circle is at the top of the circle, where the xx-coordinate is 00.

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