(tan3x - tan2x)/(1+tan3x * tan2x)=1
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(tan3x - tan2x)/(1+tan3x * tan2x) = 1
tan(3x-2x) = 1 (∵ (tanA - tanB)/(1+tanA * tanB) = tan(A-B)
tanx = 1
x = 45°
tan(3x-2x) = 1 (∵ (tanA - tanB)/(1+tanA * tanB) = tan(A-B)
tanx = 1
x = 45°
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