verify the identity.?

ln(sec θ) = -ln (cos θ)

2007-11-20 08:19:50 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

LHS
ln ( sec θ )
ln (1 / cos θ)
ln (cos θ)^(-1)
(-1) ln cos θ
- ln cos θ

RHS
- ln cos θ

LHS = RHS

2007-11-20 08:27:03 · answer #1 · answered by Como 7 · 3⤊ 1⤋

ln sec theta = ln cos theta ^ -1 = -ln cos theta

2007-11-20 16:23:07 · answer #2 · answered by UnknownD 6 · 0⤊ 1⤋

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