Answer:
Correct answer: y = 6.43 units
Explanation:
Given: the length of the vector l = 10 units , angle that closes a vector with a positive direction to the x axis α = 40°
The vector forms a rectangular triangle with coordinate axes
sin α = y / l ⇒ y = l · sin α = 10 sin 40° = 10 · 0.643 = 6.43 units
y = 6.43 units
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