Help with Calculator Problem: cos of -0.175

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The calculation of cos(-0.175) yields approximately 0.999999, which is consistent with the mathematical properties of the cosine function, as it ranges from -1 to 1. The physics book's claim that it equals 100 is incorrect without scaling the result. To achieve a value of 100, one would need to multiply the cosine result by 100. Additionally, the property that cos(-x) equals cos(x) is confirmed. The confusion likely stems from a misunderstanding of how to interpret the cosine function's output.
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Homework Statement



I typed in cos of -0.175 and I got .999999 and the physics book says it's 100. help!

Homework Equations





The Attempt at a Solution

 
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starchild75 said:

Homework Statement



I typed in cos of -0.175 and I got .999999 and the physics book says it's 100. help!

Homework Equations





The Attempt at a Solution



cos() of anything is never going to be 100. It is always in the range of [-1,1]. You would have to scale it to reach 100, that is 100*cos()
 
i think this is enough for hint...

cos[-x]=cos x...
 
cos^{-1} (-0.175) = 100^0
 

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