Question

find the value of cos75°​

Answer 1

Answer and Explanation:

The value of cos(75°) is √6−√24 6 − 2 4 . Notice that we can write 75° as 30° + 45°. Therefore, cos(75°) = cos(30° + 45°), and we can use our cosine sum rule to evaluate. We can plug these values into our formula, and simplify to find cos(75°).

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