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If a = 4, b = 3, angle A = 60º, then c is the root of the equation
- a)c2 - 3c - 7 = 0
- b)c2 + 3c + 7 = 0
- c)c2 - 3c + 7 = 0
- d)c2 + 3c - 7 = 0
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
If a = 4, b = 3, angle A = 60º, then c is the root of the equatio...
Given Information:
a = 4, b = 3, angle A = 60°
Calculating Side c:
Using the law of cosines, we can find side c using the formula:
c² = a² + b² - 2ab*cos(A)
c² = 4² + 3² - 2*4*3*cos(60°)
c² = 16 + 9 - 24*(0.5)
c² = 25 - 12
c² = 13
Writing the Equation:
Now, we can write the equation in terms of c:
c² - 3c - 7 = 0
Verifying the Correct Answer:
By plugging in the value of c² we found earlier:
13 - 3*sqrt(13) - 7 = 0
13 - 39 - 7 = 0
-33 ≠ 0
Therefore, the correct answer is not option 'A'.
a = 4, b = 3, angle A = 60°
Calculating Side c:
Using the law of cosines, we can find side c using the formula:
c² = a² + b² - 2ab*cos(A)
c² = 4² + 3² - 2*4*3*cos(60°)
c² = 16 + 9 - 24*(0.5)
c² = 25 - 12
c² = 13
Writing the Equation:
Now, we can write the equation in terms of c:
c² - 3c - 7 = 0
Verifying the Correct Answer:
By plugging in the value of c² we found earlier:
13 - 3*sqrt(13) - 7 = 0
13 - 39 - 7 = 0
-33 ≠ 0
Therefore, the correct answer is not option 'A'.
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If a = 4, b = 3, angle A = 60º, then c is the root of the equationa)c2 - 3c - 7 = 0b)c2 + 3c + 7 = 0c)c2 - 3c + 7 = 0d)c2 + 3c - 7 = 0Correct answer is option 'A'. Can you explain this answer?
Question Description
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If a = 4, b = 3, angle A = 60º, then c is the root of the equationa)c2 - 3c - 7 = 0b)c2 + 3c + 7 = 0c)c2 - 3c + 7 = 0d)c2 + 3c - 7 = 0Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about If a = 4, b = 3, angle A = 60º, then c is the root of the equationa)c2 - 3c - 7 = 0b)c2 + 3c + 7 = 0c)c2 - 3c + 7 = 0d)c2 + 3c - 7 = 0Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If a = 4, b = 3, angle A = 60º, then c is the root of the equationa)c2 - 3c - 7 = 0b)c2 + 3c + 7 = 0c)c2 - 3c + 7 = 0d)c2 + 3c - 7 = 0Correct answer is option 'A'. Can you explain this answer?.
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