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Temka [501]
3 years ago
11

Simplify (1+tan^2y)(cos2y-1)

Mathematics
1 answer:
Reil [10]3 years ago
8 0
1+tan^2(y)=1/cos^2(y)
cos 2y -1=cos^2(y) -sin^2(y)-cos^2(y) -sin^2(y)


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