Question

Find the function value to four places: sec 75° 20'

a. 0.9674
b. 0.2532
c. 1.034
d. 3.950

Answer 1

sec x = 1/(cos x)

sec 75° 20' = 1/(cos 75° 20') = 1/(cos 75 1/3°) = 3.949522...

Answer: d. 3.950