prove that
tan 2 theta =2 tan theta / 1-theta^2
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Answer:
Step-by-step explanation:
Explanation:
2tanθ1+tan2θ
= 2sinθcosθsec2θ
= 2sinθcosθ×1sec2θ
= 2sinθcosθ×cos2θ
= 2sinθcosθ
= sin2θ
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