SinƟ tanƟ + cosƟ = secƟ
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SinƟ tanƟ + cosƟ = secƟ

[From: ] [author: ] [Date: 11-11-02] [Hit: ]
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Proving identities. Please help.

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sin * sin/cos + cos = 1/(cos)
1. multiply cos by cos/cos and multiply.
sin * sin/cos +cos = 1/cos
(sin^2)/cos + (cos^2)/cos = 1/cos
(sin^2 + cos^2) / cos = 1/cos sin^2 + cos^2 = 1, so
1/cos = 1/cos

cheers :D
1
keywords: tan,cos,sec,Sin,SinƟ tanƟ + cosƟ = secƟ
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