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If cos^-1 (x) + cos^-1 (y) …

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If cos^-1 (x) + cos^-1 (y) + cos^-1 (z) =0 Then find the value of x+y+z

    • Posted by Simardeep Singh Sandhu 7 years, 11 months ago

    CBSE > Class 12 > Mathematics
    • 1 answers

    Kamal Singh Rawat 7 years, 11 months ago

    Use formula cos^-1(x) + cos^-1(y)= cos^-1{xy- (√1-x^2)(√1-y^2)}

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