SOLUTION: Solve secx = -1/2 a) no solution b) {120°, 240°} c) {150°, 210°} d) {210°, 330°}

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Question 866888: Solve secx = -1/2

a) no solution
b) {120°, 240°}
c) {150°, 210°}
d) {210°, 330°}
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
sec x = -1/2 <--> cos x = -2

No solution since cos x can only be in [-1, 1]