Verified Answer :

metchelle

sin A = cos B, where:

cos B = 243/312

Taking the arc cosine to look for the measure of the angle, this is shown below:

B =  arccos (243/312)
B = 38.84 degrees

Among the choices, the correct answer is D. 38.84 degrees.

tamiacrawford457

Answer:

D.  

38.84°

Step-by-step explanation:

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