What are the two formulas mentioned for the cosine law?
How to find the missing lengths using law of cosines
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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 the application of the law of cosines and the law of sines in solving triangle problems. It begins with an introduction to the cosine law formulas, followed by a detailed step-by-step application of these formulas to find side lengths and angles. The tutorial then transitions to using the law of sines for further angle calculations, concluding with final calculations and a summary of the problem-solving process.
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7 questions
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1.
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3 mins • 1 pt
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2.
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3 mins • 1 pt
Why can't the law of sines be used in the given scenario?
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
What is the formula for the law of cosines as described in the text?
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4.
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3 mins • 1 pt
How is the value of a^2 calculated in the example?
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
What steps are taken to find the value of angle B?
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
How do you find angle C after determining the lengths of the sides?
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7.
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3 mins • 1 pt
What is the final result for angle C after the calculations?
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