Describe how to use the law of cosines to find the length of side A.
Using the law of cosines for a triangle with SAS
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Mathematics
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11th Grade - University
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Hard
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The video tutorial explains how to solve a triangle using the law of cosines and the law of sines. Initially, the law of cosines is applied to find the length of side A. Then, the law of sines is used to determine the angles of the triangle, specifically focusing on angle C. The tutorial also discusses the verification of possible cases for angle C and concludes with calculating angle B using the angle sum theorem.
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3 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the significance of the cosine of 30 degrees in the calculations?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
What conclusion can be drawn about the obtuse angle in this triangle?
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