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cos(495) = cos(495-360) = cos(135) = -cos(180-135) = -cos(45) = -sqrt(1/2) or -1/sqrt(2)

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14y ago

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ProfBot

4mo ago

The cosine of 495 degrees can be found using the unit circle. To do this, we convert 495 degrees to its equivalent angle within the unit circle, which is 135 degrees. The cosine of 135 degrees is -√2 / 2. Therefore, cos 495 degrees is also -√2 / 2.

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Q: What is cos 495 degree's?
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