jaynacroisant4978 jaynacroisant4978
  • 06-02-2024
  • Mathematics
contestada

In the equation sin a 2sin b 3sin c = 0 and cos a 2cos b 3cos c = 0, if cos 3a 8 3b 27 equals zero, what is the value of cos 3a?
a) 0
b) 1
c) -1
d) √3/2

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