Ответ:
1. cosx = cos2x-1
2. sinx = cosx+1
Объяснение:
1. cos2x-cosx-1=0
cos2x = cosx+1
cosx = cos2x-1
2. sinx-1/cosx=0
cosx = sinx-1
sinx = cosx+1
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Answers & Comments
Ответ:
1. cosx = cos2x-1
2. sinx = cosx+1
Объяснение:
1. cos2x-cosx-1=0
cos2x = cosx+1
cosx = cos2x-1
2. sinx-1/cosx=0
cosx = sinx-1
sinx = cosx+1