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Mathematics 10 Online
OpenStudy (anonymous):

cos(x) + sin(x)tan(x) = sec(x). Show this is an identity.

OpenStudy (amistre64):

well; put everything in terms if sin and cos first

OpenStudy (amistre64):

cos + sin(sin) 1 ------- = ---- cos cos

OpenStudy (amistre64):

cos^2 + sin^2 1 ------------- = ----- = sec cos cos

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