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Natasha_Volkova [10]
2 years ago
12

Suppose a triangle has two sides of length 42 and 35, and that the angle

Mathematics
2 answers:
lys-0071 [83]2 years ago
6 0

yeah he/she is right ..................

maxonik [38]2 years ago
5 0

9514 1404 393

Answer:

  c = √(42² +35² -2·42·35·cos(120°))

Step-by-step explanation:

The third side can be found using the Law of Cosines. It will tell you ...

  c² = a² +b² -2ab·cos(C)

where C is the angle opposite the third side (c). For the given side lengths, then the third side can be found from ...

  c = √(42² +35² -2·42·35·cos(120°))

__

<em>Additional comment</em>

You have not provided answer choices to this "which ..." problem. So the above equation may be different from any on your list. We expect your answer choices may leave the equation in the form <em>c² = ...</em>.

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