Question

Find the value of the sec 19° using your calculator. 0.946 1.011 0.989 1.058

Answer 1

sec θ = 1/cosθ

sec 19° = 1/cos19°

≈ 1/0.9455 ≈ 1.0576 ≈ 1.058

Answer 2

The value of sec 19° = 1.058

Explanation:

the value of the sec 19° using your calculator

use trigonometric ratios to find sec(19)

we know that sec(A) = 1/cos(A)

So sec(19)= 1/ cos(19)

now find the value of cos(19) using calculator

sec(19)= 1/ cos(19)= 1.058

The value of sec 19° = 1.058