How do you find the exact values of sin 22.5° using the half-angle fo

1.	How do you find the exact values of sin 22.5° using the half-angle formula?
Answer» The exact value of sin 22.5° using the half-angle formula is√(2 -√2) / 2 or0.38 We can find the exact value by using thehalf-angle formula.

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