Express as a single fraction, the exact value of sin 75

Question

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Answer 1

The square root of 6 divided by 4 plus the square root of 2 divided by 4.
To solve this, look at a unit circle and find two angles that will add up to 75 degrees; in this case pi/4 and pi/6 because their degree angles are 45 and 30 and add up to 75. Then take the y - coordinate for both and multiply them

Answer 2

√3+1/2√2

that's the answer