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2 years ago

Help i can't figure this out. Can someone help explain how to do this

Mathematics

1 answer:

postnew [5]2 years ago

6 0

Those two angles have to add up to 180° as that is a straight angle, so 5x - 10 + 6x + 10 = 180. combine like terms to get 11x - 10 + 10 = 180. the 10 cancels, so 11x = 180. divide both sides by 11 to get x = approximately 16.36.

FYI - I CANNOT TELL IF THAT ACTUALLY SAYS 5

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Step-by-step explanation:

The formula for calculating the angle between two vectors is expressed as;

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|u| = √8²+4²

|u| = √64+16

|u| = √80

|v| = √9²+(-9)²

|v| = √81+81

|v| = √162

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36 = √12960 cos theta

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theta = arccos (0.3162)

theta = 71.6 degrees

Hence the angle between the given vectors is 71.6 degrees

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