Question

What is the value of cos(256°48') to the nearest hundredth?

Answer 1

We'll begin by transforming the 48' (arc minutes) into a decimal numer. Since they are arc minutes, we can think of them as 48/60 minutes, this is:

`(48)/(60)=0.8`

In other words, 48 arc minutes equal 0.8 degrees. From here we can use a calculator to get the following result:

Round to the nearest hundredth:

`\cos (256.8)=-0.23`