To set the angle unit to degree, you proceed as follows.
Open the MAIN calculator window (screen capture 1)
Tap the down pointing arrow at the left (Left of Edit)
Tap the Geometry Format to open the next window. If the second drop down
window (Angle) does not display Degree, tap the small arrow at the right.
Highlight degree and press the Set button at the bottom. If you want degree
to be the default angle measure, tap the Default button
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