1.

If asectheta+btantheta+c=0andpsectheta+qtantheta+r=0, then (br-qc)^(2)-(pc-ar)^(2)=?

Answer»

a) `(bp-aq)`
B) `(aq-bp)^(2)`
C) `(aq+bp)^(2)`
d) NONE of these

Answer :A::B


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