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• Identical expressions

• - three *sin(x/ two)/ two = zero
• minus 3 multiply by sinus of (x divide by 2) divide by 2 equally 0
• minus three multiply by sinus of (x divide by two) divide by two equally zero
• -3sin(x/2)/2 = 0
• -3sinx/2/2 = 0
• -3*sin(x divide by 2) divide by 2 = 0

• Similar expressions

• 3*sin(x/2)/2 = 0