how to remember the values of trigonometry of certain angles and trigonometric ratios
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|