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OpenStudy (anonymous):
simpifly cos(y)+cos(y)tan^2(y)
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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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