SOLUTION: Okay i put in the calculator cos^-1(-73/-80) and i got .42 in decimal form and 24 in degree form, but then the answer i put in was wrong and it said that it was 0.91 but still has

Question 757004: Okay i put in the calculator cos^-1(-73/-80) and i got .42 in decimal form and 24 in degree form, but then the answer i put in was wrong and it said that it was 0.91 but still has 24 in degree form. Can someone explain to me why the answer is 0.91? Please help?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
cos^-1(-73/-80) will give you 24.1 degrees, if
you calculator is in degrees.
or if your calculator is in radians - 0.42 radians.
Hope this helps.
:-)
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