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Mathematics 14 Online
OpenStudy (anonymous):

simpifly cos(y)+cos(y)tan^2(y)

OpenStudy (anonymous):

cos(y)(1+tan^2(y)) <== identity here

OpenStudy (anonymous):

cos(y)(sec^2(y))= ????

OpenStudy (ragingsquirrel):

Simplifying cos(y) + cos(y) * tan2(y) Multiply cos * y cosy + cos(y) * tan2(y) Multiply cos * y cosy + cosy * an2t * y Multiply cosy * an2t cosy + acn2osty * y Multiply acn2osty * y cosy + acn2osty2 Reorder the terms: acn2osty2 + cosy

OpenStudy (anonymous):

sec(y)

OpenStudy (anonymous):

sec y

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