How do you use a calculator to evaluate ${cos}^{- 1} (- 0.6)$ $cos^-1 (-0.6)$ in both radians and degree?

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Answer 1 · 2017-03-18T18:35:14

$126°52'11''$ and $2.2143$ radians

enter $0.6$ change sign on calculator

$-0.6$ on the calculator screen

now press $cos^-1$ (arc sine)

$=126.68698976°$ decimal degrees

$=126°52'11''$

$126.68698976 xx pi/180$

$126.68698976 xx 0.017453292$

$2.2143$ radians

How do you use a calculator to evaluate cos^-1 (-0.6)cos−1(−0.6)cos^-1 (-0.6) in both radians and degree?