Dear experts, I am practicing the Trig identity, however met some issue in the changing Please kindly advise me: identify: Thank you so much!
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Originally Posted by janice91 Dear experts, I am practicing the Trig identity, however met some issue in the changing Please kindly advise me: identify: The boxed part is incorrect. Apply the double angle formula again for tan(2B) and you would get the answer. Thank you so much! .
Hello, janice91! I met some issue in the changing . No wonder! . . . The two expressions are NOT equal.
I have made a careless mistake. Thank you for guidance!
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