tan^2A+2tanA-8 pls give answer step by step
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Step-by-step explanation:
A=30⇒2A=60
tan2A=1−tan2A2tanA.
A=30 degrees
Show that:
tan60∘=1−tan230∘2tan30∘
RHS:
1−tan230∘2tan30∘=1−312×31=2/32/3
=3/3
=3
=tan60∘
=LHS.
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