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Verify the Identity ln⁡sec⁡θ=−ln⁡cos⁡θ\ln \sec \theta = - \ln \cos \theta

Question 13

Multiple Choice

Verify the identity. ln⁡sec⁡θ=−ln⁡cos⁡θ\ln \sec \theta = - \ln \cos \theta


A) valid
B) invalid

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