SOLUTION: determine all values of x in the interval [0,2pi] a) cotx=8 b) cscx=-3 c) secx=7

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Question 1189910: determine all values of x in the interval [0,2pi]
a) cotx=8 b) cscx=-3 c) secx=7
Answer by MathLover1(20850) About Me  (Show Source):
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determine all values of x in the interval [0,2pi]
a)
cot%28x%29=8+
x=cot%5E-1%288+%29
x=7.125°
all values of x in the interval [0,2pi]:
x=7.125°, x=187.125°

b)

csc%28x%29=-3+
x=csc%5E-1%28-3+%29
x=-19.47°
all values of+x in the interval [0,2pi]:
x=360-19.47°
x=340.53°

c)
sec%28x%29=7
x=sec%5E-1%287%29
x=81.79
all values of x in the interval °[0,2pi]:
x=81.79°
x=360-81.79=278.21°