Help with Calculator Problem: cos of -0.175

[starchild75]

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

 

[FrogPad]

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()

 

[physixguru]

i think this is enough for hint...

cos[-x]=cos x...

 

[Leong]

$$cos^{-1} (-0.175) = 100^0$$