Respuesta :

wegnerkolmp2741o

Answer:

cos B = 9/41

Step-by-step explanation:

Using trig functions, since we have a right angle,

cos theta = adjacent side/ hypotenuse

Cos B = 18/82

Dividing the right side by 2

cos B = 9/41
The answer is A
You have to use the trigonometric ratio as it is a right angle triangle.
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