(sec8A - 1) /(sec4A - 1) =tan 8A / tan 4A prove this.

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- May 9th 2012, 07:59 PMsrirahulanTrig Prove
(sec8A - 1) /(sec4A - 1) =tan 8A / tan 4A prove this.

- May 9th 2012, 08:14 PMprincepsRe: Trig Prove
Statement is false . Counterexample $\displaystyle A=30^{\circ}$