find theta in radians to the nearest tenth if: sec(theta) = 1.4231

is this correct:

enter into calculator: cos^(-1)= 1/1.4231

get .7916232503, rounded to the nearest tenth = .8

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- February 28th 2008, 05:59 PMalgebra2finding theta in radians
find theta in radians to the nearest tenth if: sec(theta) = 1.4231

is this correct:

enter into calculator: cos^(-1)= 1/1.4231

get .7916232503, rounded to the nearest tenth = .8 - February 28th 2008, 06:21 PMMathnasium
Correct - always make sure your calculator is in the appropriate mode (degrees vs. radians). Perfect!