Question

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Find the cosine of ∠V.

Write your answer as an integer or as a decimal rounded to the nearest hundredth.

cos(V) =

Answer 1

Answer:

0.44

Step-by-step explanation:

This is a right angled triangle, so it yields:

                                             $\cos \angle V = \frac{adjacent}{hypotenuse}$

The value of adjacent is 39.

We will use the Pythagorean rule to obtain the length of hypotenuse:

                                         $hypotenuse^2 = 39^2 + 80^2\\hypotenuse^2 = 1521 + 6400\\hypotenuse^2 = 7921\\hypotenuse = \sqrt{7921}\\hypotenuse = 89$

Now we can insert that into $\cos \angle V$:

$\cos \angle V = \frac{39}{89} =0.44$