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valentinak56 [21]
3 years ago
12

Find the measure of Q, the smallest angle in a triangle whose sides have lengths 4, 5, and 6. Round the measure to the nearest w

hole degree.
34°

41°

51°

56°

Mathematics
2 answers:
Ray Of Light [21]3 years ago
7 0

Answer:

Q=41\°

Step-by-step explanation:

we know that

Applying the law of cosine

c^{2} =a^{2}+b^{2}-2abcos (C)

Solve for cos(C)

cos (C)=[a^{2}+b^{2}-c^{2}]/[2ab]

In this problem we have

a=6\ units,b=5\ units, c=4\ units, C=Q

substitute the values

cos (Q)=[6^{2}+5^{2}-4^{2}]/[2*6*5]

cos (Q)=[45]/[60]

Q=cos^{-1}(\frac{45}{60}) =41\°

dsp733 years ago
3 0
Using SSS the given angles are 83, 56, and 41
41.41 is angle Q
41.41 so it's B
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