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(sqrt(6)-sqrt(2))/4

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Q: What is the exact value of sine 15?
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What is the exact value to sine 480 degrees?

The exact value is 0.5*sqrt(3)


What is the value of the sine ratio for the angle 15 degrees?

sine(15 degrees) = 0.25882 (rounded)


What is the exact value of sin 75?

Answer #1:The exact value is (square root of 6 + square root of 2) / 4===========================Answer #2:I don't think so.The sine of almost all angles is an irrational number. 75 degrees is one of them.That means its sine can never be exactly written with numbers.The value given in Answer #1 is greater than ' 1 ', and we know that no sine canhave that value.


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What is the exact value of cos 15?

It is: cos(15) = (sq rt of 6+sq rt of 2)/4