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Find the value of tan pie/8 …

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Find the value of tan pie/8 please

    • Posted by Unique #Seraj Ali ??? 4 years, 7 months ago

    CBSE > Class 11 > Mathematics
    • 4 answers

    Vanshika Goyal 4 years, 7 months ago

    Let Ф = π/8 2Ф = π/4 tan 2Ф = 1  = 2 tan Ф / [ 1 - tan² Ф ] 1 - tan² Ф = 2 tan Ф tan² Ф + 2 tan Ф - 1 = 0 tan Ф  =  1/2 [ -2 +- √(4 +4) ]  = -1 +- √2  tan π/8 is > 0  Therefore,  tan π/8 = √2 - 1

    1Thank You

    Unique #Seraj Ali ??? 4 years, 7 months ago

    Ok

    0Thank You

    Dεερακ Ȿιηɠꜧ 4 years, 7 months ago

    Tan180/8 = tan 22.5 = tan 45/2

    0Thank You

    Unique #Seraj Ali ??? 4 years, 7 months ago

    With full explanation

    0Thank You

    ANSWER
    http://mycbseguide.com/examin8/

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