A vector has a length of 10 and rises
at an angle of 40°. What is the
y-component of this vector?
X
SA
SERE

Correct  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

God is with you!!!

area of focus

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