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On the unit circle sin(90) degrees is at Y = 1 and as that is on the Y axis X will equal = 0.

Ask yourself. Where would 90 degrees be on a 360 degree circle? Straight up.

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Q: Why does x equal 0 when finding the sin of 90 degrees?
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What is the sin of 90 degrees?

sin(90) = 1


Cosine 35 degrees sine 55 degrees plus sine 35 degrees cosine 55 degreees?

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90 degrees Fahrenheit is equal to 32.3 degrees Celsius.


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