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Why do the trigonometric functions give inaccurate values (e.g. sine of 10 degrees gives -0.5440211109)?

April 26, 2017degrees functions gives inaccurate Sine trigonometric values

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Why do the trigonometric functions give inaccurate values (e.g. sine of 10 degrees gives -0.5440211109)?

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You have the angle mode set to Radians, instead of degrees. Click on the “opt” button and select the “Mode” tab or use the Options/General menu, and select “deg” as the angle mode. The correct answer for the sine of 10 degrees is 0.1736481777 .