Question

Find the length of AC¯¯¯¯¯¯¯¯ A. 36.5 B. 46.97 C. 74.63 D. 45.07

Answer 1

`a \: 36.5`

Explanation:

cos51° = AC/58

AC = cos51° x 58

AC = 36.5

Answer 2

The answer is option A

Explanation:

Since the figure above is a right angled triangle we can use trigonometric ratios to find AC.

To find AC we use cosine

cos∅ = adjacent / hypotenuse

From the question

AC is the adjacent

AB is the hypotenuse

So we have

`\cos(51) = (AC)/(AB)`

`AC = 58 \cos(51)`

AC = 36.5

Hope this helps you