Question

If h = 8.1 inches and k = 9 inches, what is the approximate measure of angle α?

Answer 1

The answer is 26

Explanation:

I had this question on a test and got it correct

Answer 2

Answer: C. 26°

Explanation:

Right triangle: a triangle in which one of the interior angles measures 90°.

This type of angle can be solved using trigonometrical functions. As the measure of the sides given are h and k, then we will use:

`cos a=(adyacent)/(hypotenuse)`

In our case, it would be:

`cos a=(h)/(k)`

Replacing the values:

`cos a= (8.1)/(9)`

Solving for a:

`cos^(-1) (cos a)=cos^(-1)((8.1)/(9) )`

`a= cos^(-1)((8.1)/(9) )`

a≈ 25.8 ≈26

Answer: C. 26°