To find out whether the law of Sines or the law of Cosines is needed to solve the given triangle.
Answer to Problem 66E
Law of Cosines.
Explanation of Solution
Given Information:
The given triangle is −
In this triangle there is no information about angles
Hence the required law to solve this triangle is Law of Cosines.
To find out whether the law of Sines or the law of Cosines is needed to solve the given triangle.
Answer to Problem 66E
Law of Sines.
Explanation of Solution
Given Information:
The given triangle is −
In this triangle all the angles are known and one side is known
Hence the required law to solve this triangle is Law of Sine.
To find out whether the law of Sines or the law of Cosines is needed to solve the given triangle.
Answer to Problem 66E
Law of Sines.
Explanation of Solution
Given Information:
The given triangle is −
In this triangle only one angle and two sides known
So by using law of sine we can find and then by using this angle we can find again by using law of sine.
Thus the required law to solve this triangle is Law of Sines.
To find out whether the law of Sines or the law of Cosines is needed to solve the given triangle.
Answer to Problem 66E
Law of Cosines.
Explanation of Solution
Given Information:
The given triangle is −
Here by using law of cosine we can find
Then all the three sides are known then again we can apply law of cosine
Hence the required law to solve this triangle is Law of Cosines.
Chapter 6 Solutions
EBK PRECALCULUS W/LIMITS
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