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suppose a triangle has two sides of length 42 and 35 and that the angle.between these two sides is 120° what is the length of the third side

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suppose a triangle has two sides of length 42 and 35 and that the angle.between these two sides is 120° what is the length of the third side

Question

suppose a triangle has two sides of length 42 and 35 and that the angle.between these two sides is 120° what is the length of the third side of the triangle

## Answers ( )

Answer:The length of the third side of the triangle is

Step-by-step explanation:Let

c —-> the length of the third side of the triangle

we know that

Applying the law of cosines

we have

substitute the given values

Answer:

66.78

Step-by-step explanation:

took the cst