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Pllzzzzzzz tell me .....the principal value …

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Pllzzzzzzz tell me .....the principal value of (sec inverse -1/2)......

    • Posted by G K 7 years, 2 months ago

    CBSE > Class 12 > Mathematics
    • 5 answers

    G K 7 years, 2 months ago

    Okk thnxx

    0Thank You

    Aisha Gupta 7 years, 2 months ago

    Let sec-¹(-1/2)= y. => secy= -1/2 => cosy= -2 but as cos belongs to [-1,1] so there is no possiblity of existance of sec-¹(-1/2) .I think there is some thing missing in the question or dont know

    1Thank You

    G K 7 years, 2 months ago

    Okk then whats the ans of this

    0Thank You

    Aisha Gupta 7 years, 2 months ago

    Sorry I thought the Q is different i.e this is ans of cos-¹1/√2

    0Thank You

    Aisha Gupta 7 years, 2 months ago

    π-π/4 = 3π/4 as it belongs to(0,π)i.e in the range of sec-¹ x

    0Thank You

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