Question

Evaluate cos(37°15').

0.7944
0.7960
0.7971

Answer 1

cos(37°15')=0.7960

Explanation:

Evaluate cos(37°15').

First we convert 15' into degree

60' = 1 degree, to convert 15' to degree we divide by 60

So 15' =
`(15)/(60) =0.25` degree

cos(37°15')=cos(37° +0.25°)= cos(37.25°)

Now we use calculator to find the value of cos(37.25°)

Put the calculator in degree mode

cos(37.25°)=0.7960

Answer 2

cos(37°15') = cos(37.25°) ≈ 0.7960

15' means 15/60 of a degree, or 0.25 degrees.

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Note: the calculator mode is set to Degrees.