Question

-> 2 1 point Use the right triangle below to solve. A C b C с B 1 1 a Which trig function should be used to find side a if you know the measure of angle E 2 sine cosine 3 tangent O pythagorean theory 4 M

Answer 1

cosine

Step-by-step explanation:

c is the hypotenuse of the triangle and a is the adjacent side of the angle B.

On the other hand, the trigonometric functions sine, cosine, and tangent are equal to:

`\begin{gathered} \sin (Angle)=\frac{\text{Opposite Side}}{Hypotenuse} \\ \cos (\text{Angle)}=\frac{Adjacent\text{ Side}}{Hypotenuse} \\ \tan (\text{Angle)}=\frac{Opposite\text{ Side}}{Adjacent\text{ Side}} \end{gathered}`

So, the trigonometric function that relates the angle B with its adjacent side a and the hypotenuse c is cosine.

Therefore, the answer is cosine.