General solutions of tanx.tan2x=2
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tanx. 2tanx / 1-tan²x=2
2tan²x/1-tan²x=2
2tan²x=2-2tan²x
4tan²x=2
tan²x=1/2
tanx=1/√2
tan^-1(1/√2)=∅
∅ lies between 30° and 45°
2tan²x/1-tan²x=2
2tan²x=2-2tan²x
4tan²x=2
tan²x=1/2
tanx=1/√2
tan^-1(1/√2)=∅
∅ lies between 30° and 45°
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