SOLUTION: Sin(x).tan(x)/cos(x) + 1 = 1/cos^2(x) Prove the identity

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Question 889599: Sin(x).tan(x)/cos(x) + 1 = 1/cos^2(x)
Prove the identity

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Sin(x).tan(x)/cos(x) + 1 = 1/cos^2(x)
Prove the identity
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Sin(x)*tan(x)/cos(x) + 1 = 1/cos^2(x)
Sin^2(x)/cos^2(x) + 1 = 1/cos^2(x)
tan^2 + 1 = sec^2
QED

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