Why is "acos (6.25)" not working?

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700

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Guest Mar 19, 2015

+118677

+5

Best Answer

If you think it cos of an acute angles it is adjacent side / hypotenuse

the hypotenuse is always the longest side so this ratio must be less than one.

When you extand the angle to include all angles then $$-1\le cos(angle)\le 1$$

Melody Mar 19, 2015

Melody · Answer 1 · 2015-03-19T10:59:30

If you think it cos of an acute angles it is adjacent side / hypotenuse

the hypotenuse is always the longest side so this ratio must be less than one.

When you extand the angle to include all angles then $$-1\le cos(angle)\le 1$$

Will85237 · Answer 2 · 2015-03-19T06:27:28

acos only works for numbers between -1 and 1 because of the unit circle has a radius of 1.