Physics 1 Midterm - Part 1 of 3
SAMPLE
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3. Vectors / Introduction to Dot Product (Scalar Product) / Problem 25
Problem 25
Vector lies in the xy plane making an angle of θ above the positive x-axis. Vector is lying in the same plane making an angle Φ below the positive x-axis. Determine their dot product.
Hint: Use one of the following identities-
cos(A + B) = cosAcosB - sinAsinB
cos(A - B) = cosAcosB + sinAsinB
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