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• Identical expressions

• three *sin(x) + four *cos(x) = zero
• 3 multiply by sinus of (x) plus 4 multiply by co sinus of e of (x) equally 0
• three multiply by sinus of (x) plus four multiply by co sinus of e of (x) equally zero
• 3sin(x) + 4cos(x) = 0
• 3sinx + 4cosx = 0

• Similar expressions

• 3*sin(x) - 4*cos(x) = 0
• 3*sinx + 4*cosx = 0