Question

Find the principle value of each of the following to the nearest minute:

Arccos (0.333)

Answer 1

D. 70°32'

Explanation:

You want the angle represented by arccos(0.333) to the nearest minute.

Angle

The attached calculator shows the angle in degrees (70.54903521713) and in degrees, minutes, and seconds (70°32'56.53"). There are 60 seconds in a minute, so the number of seconds being more than 30 means the minutes should be rounded up to ...

70°33'

The closest answer choice is D. 70°32'.