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If sin A=¾, calculate cos A …

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If sin A=¾, calculate cos A and tan A.

    • Posted by Sathi Sardar 4 years, 10 months ago

    CBSE > Class 10 > Mathematics
    • 2 answers

    Yogita Ingle 4 years, 10 months ago

    1Thank You

    Gaurav Seth 4 years, 10 months ago

    S o l u t i o n
    Given sinA=3/4
    Or p/h=3/4
    Let  p=3k and h=4k
    Now By Pythagoras theorem
    p2 + b2 =h2
    9k2 + b2 =16k2

    b2 = 7k2
    Or  b=+k√7
    Now CosA=b/h=√7/4
    Now tanA=SinA/CosA=3/√7

    4Thank You

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