andreanb4168 andreanb4168
  • 23-01-2018
  • Mathematics
contestada

Simplify the expression by using a double-angle formula. −2cos2π91

Respuesta :

zrh2sfo
zrh2sfo zrh2sfo
  • 23-01-2018
The Answer of −2cos2π91 = is -2 
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