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Given: ΔABC; a= 10; b = 4, and c = 11. Find the measurement of ∠B to the nearest tenth of a degree. A) 21.3° B) 24.7° C) 25.1° D) 31.4°
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Given: ΔABC; a= 10; b = 4, and c = 11. Find the measurement of ∠B to the nearest tenth of a degree. A) 21.3° B) 24.7° C) 25.1° D) 31.4°

User Eugenecp
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A) 21.3° is the answer, you must do the angle version of the law of cosines.
User Vin Gazoil
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