Justification of construction
how to remember the values of trigonometry of certain angles and trigonometric ratios
If 𝑎⃗⃗ 𝑎𝑛𝑑 𝑏⃗⃗ are any two vectors then show that
1. |𝑎⃗ . 𝑏⃗⃗| ≤ |𝑎⃗||𝑏⃗⃗| 2. |𝑎⃗ + 𝑏⃗⃗| ≤ |𝑎⃗| + |𝑏⃗⃗|