sec8A - 1 /sec4A - 1 =tan 8A / tan 4A

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- May 9th 2012, 02:49 AMsrirahulanTrig Prove
sec8A - 1 /sec4A - 1 =tan 8A / tan 4A

- May 9th 2012, 03:08 AMemakarovRe: Trig Prove
is false in general; see the graphs. Now, I know you want to prove , but how can you deal with trigonometry if you don't know the order of arithmetic operations? The second equality is also false in general; see the graphs.