elainavinson
elainavinson elainavinson
  • 15-09-2017
  • Mathematics
contestada

solve cos x + sq. root of 2 = - cos x for x over the interval {0,2pi].

A) x = 3pi/4
B) x = 3pi/4 + 2npi
C) x = 3pi/4 and 5pi/4
D) x = pi/4 and 7pi/4

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musiclover10045
musiclover10045 musiclover10045
  • 15-09-2017

see attached picture for the answer:

 I have fixed the answer


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