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Prove tan 2A = cot (A-18)

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Prove tan 2A = cot (A-18)

    • Posted by Amrita Maurya 7 years, 4 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Deepika Singh 7 years, 4 months ago

    A= 36

    1Thank You

    Sajal Singh Chauhan 7 years, 4 months ago

    tan 2A =cot(A-18) tan(90-2A) =cot(A-18) Cot(90-2A)=cot(A-18) 90-2A=A-18 90+18 =A+2A 108= 3A A=108\3 A=36

    3Thank You

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