Math Problem Statement

Dua buah vektor masing-masing a = 8 satuan dengan arah ke utara  dan 10 satuan  dengan arah ke barat  membentuk sudut 60o terhadap arah utara. 

a. Hitung a.b

b. Hitung a x b

Solution

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Math Problem Analysis

Mathematical Concepts

Vector Algebra
Dot Product
Cross Product
Trigonometry

Formulas

Dot product: a ⋅ b = |a| |b| cos(θ)
Cross product: |a × b| = |a| |b| sin(θ)

Theorems

Right-hand rule for cross product
Properties of dot product and cross product

Suitable Grade Level

Undergraduate (Engineering/Physics)