SOLUTION: Use a calculator to evaluate the expression. Round your result to two decimal places. (Enter your answer in radians.) arccos (-2/7)

Algebra ->  Trigonometry-basics -> SOLUTION: Use a calculator to evaluate the expression. Round your result to two decimal places. (Enter your answer in radians.) arccos (-2/7)       Log On


   

Question 691641: Use a calculator to evaluate the expression. Round your result to two decimal places. (Enter your answer in radians.)
arccos (-2/7)

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
arccos (-2/7) = 1.86 radians (principal value)
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You should get your own calculator.