MATSEC AM Pure Mathematics Complete Prep Course — Lesson 87: Angles between lines and perpendicularity

Lesson 87 shows that the angle between two lines depends only on their direction vectors, never on the points they pass through. It covers the cosine formula with scalar product over the product of moduli, the convention of reporting the acute angle, the zero scalar product test for perpendicularity including skew lines, parallel directions as scalar multiples, and solving for a missing component.

Lesson 87 of 158 in the MATSEC AM Pure Mathematics Complete Prep Course audio course from ExamPrepRise.

• Watch the video course (exampreprise.com/courses/mt-matsec-am-pure-mat…)
• Free practice questions (exampreprise.com/practice/mt-matsec-am-pure-ma…)

Always confirm the current test plan, eligibility rules, fees and scheduling details with the official test provider before you register.