Law of cosines: a2 = b2 + c2 – 2bccos(a)
what is the measure of q to the nearest whole degree?
43°
49°
53°
58°

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step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis:

step-by-step explanation:

classify each pair of angles as alternate interior, same-side interior, or corresponding angles.