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• Identical expressions

• - two *sin(x)/cos(x) = zero
• minus 2 multiply by sinus of (x) divide by co sinus of e of (x) equally 0
• minus two multiply by sinus of (x) divide by co sinus of e of (x) equally zero
• -2sin(x)/cos(x) = 0
• -2sinx/cosx = 0
• -2*sin(x) divide by cos(x) = 0

• Similar expressions

• 2*sin(x)/cos(x) = 0
• -2*sinx/cosx = 0