Question

Calculate the value of A

Answer 1

Second Option

`a=1.46`

Explanation:

The triangle of the figure is a straight triangle.

We know the length of the hypotenuse, h = 2, and we know the angle A = 43°. We need to find the length a. Side a is the side adjacent to the 43° angle

By definition we know that

`cosx = (adjacent)/(hypotenuse)`

Then

adjacent = a

hypotenuse =2

x =43°

`cos(43\°) = (a)/(2)`

`a= 2cos(43\°)`

`a= 1.46`