Find the unit vector in the direction of the vector (3, 4).
Practice Questions
Q1
Find the unit vector in the direction of the vector (3, 4).
(0.6, 0.8)
(0.8, 0.6)
(1, 1)
(0.5, 0.5)
Questions & Step-by-Step Solutions
Find the unit vector in the direction of the vector (3, 4).
Step 1: Identify the vector you want to find the unit vector for. In this case, the vector is (3, 4).
Step 2: Calculate the magnitude of the vector. Use the formula: Magnitude = √(x^2 + y^2), where x and y are the components of the vector.
Step 3: Substitute the values into the formula: Magnitude = √(3^2 + 4^2).
Step 4: Calculate 3^2, which is 9, and 4^2, which is 16.
Step 5: Add the results: 9 + 16 = 25.
Step 6: Take the square root of 25: √25 = 5. This is the magnitude of the vector.
Step 7: To find the unit vector, divide each component of the original vector by the magnitude.
Step 8: Divide the x-component: 3 / 5 = 0.6.
Step 9: Divide the y-component: 4 / 5 = 0.8.
Step 10: Write the unit vector as (0.6, 0.8).
Unit Vector – A unit vector is a vector that has a magnitude of 1 and indicates direction.
Magnitude of a Vector – The magnitude of a vector is calculated using the Pythagorean theorem, which involves squaring the components, summing them, and taking the square root.
Normalization – To find a unit vector, divide each component of the vector by its magnitude.