Use your calculator or the trigonometric table to find cos -1(0.05). Give the angle measure to the nearest degree.

Question

legomyego180 · Answer

Do you have a graphing calculator?

montsechamorro · Answer

no

zzr0ck3r · Answer

https://www.wolframalpha.com/input/?i=cos+%5E-1(0.05)

zzr0ck3r · Answer

note the ^

montsechamorro · Answer

Thank you!

zzr0ck3r · Answer

np, get a calculator :)

legomyego180 · Answer

You will need one to do this question.
If you have a smartphone, download the app wabbitemu for a free one, however I doubt your instructor will allow it on the test.

To find this you need to make sure your calculator is in degrees mode.
To do this you click the "mode" button and on the third line down degree should be highlighted.
Once you've checked this you click the "2nd" button, then click the button that says "cos".

Your screen will display something that looks exactly like this:

$$\cos^{-1}($$

This is where you type the vaue you're trying to find. I.E.

$$\cos^{-1}(0.05)$$

Since you do not have a calculator, I'll calculate it for you:

The answer is 87.134 degrees, or to the nearest degree: 87 Degrees.

In future questions you can use wolfram alpha with the notation cos^-1($value$) until you get a calculator.

legomyego180 · Answer

@montsechamorro be sure to write your answer in degrees, the first value you see on @zzr0ck3r link is in radians, you need the second value for degrees