INVERSE TRIG FUNCTIONS Evaluating (Page 3 of 10)

To the nearest tenth of a degree, an angle of 38.6° has a cosine of 0.7811. To obtain the angle in degree-minute-second format, use the DMS command.
 2nd ANGLE key. 4: menu selection. ENTER key. Calculator screen image.

While in Degree mode, we can convert the angle to radians by multiplying the previous result by π/180. The angle would be approximately 0.67 radians.

 Multiply key. 2nd Pi key. Divide key. 180 ENTER key. Calculator screen image.
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