How do you find the angle between two vectors?

Using cosine rule a.b = |a||b|cos(theta) and the example vectors a = (1,2,3) and b = (3,2,1),First explain why the cosine rule exists, use a geometric proof of the cosine rule. Show the magintude of a=b=root(14) and a.b = 10, show cos(theta) = 5/7

Answered by OWEN B. Maths tutor

2877 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Find tan(A-B) sec^2(A) - 2tan(A) = 16 && sin(B)sec^2(B) = 64cos(B)cosec^2(B)


Prove that 8 times any triangle number is always 1 less than a square number


The volume of liquid in a container is given by v=(3h^2+4)^(3/2)-8, find dV/dh when h = 0.6


Solve the following equation: x^(3) - 6x^(2) + 11x - 6 = 0


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences