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• Identical expressions

• cos(x/ two + pi/ six) = zero
• co sinus of e of (x divide by 2 plus Pi divide by 6) equally 0
• co sinus of e of (x divide by two plus Pi divide by six) equally zero
• cosx/2 + pi/6 = 0
• cos(x divide by 2 + pi divide by 6) = 0

• Similar expressions

• cos(x/2 - pi/6) = 0