+65-85483705

The angle between two lines (Vector)

Question

Find out all the angles between the following vectors.

  1. a = i + 5j + k
  2. b = i + 6j + 7k
  3. c = i – 2j + 10k

Answer

  1. a & b = 37.9
  2. a & c = 88.9
  3. b & c = 51.6

Note:

Angle between two lines

cos y = a.b/(|a||b|)
a.b is the scalar product of two vector

About the Math Tutor - Dr Loo

I am a PhD holder with 9 years of teaching experience at secondary school and university. My expertizes are mathematics, statistics, econometrics, finance and machine learning.

Currently I do provide consultation and private tuition in Singapore. For those who are looking for math tutor in Singapore or statistics tutor in Singapore, please feel free to contact me at +65-85483705 (SMS/Whatsapp/Telegram).

Some of the math tuition in Singapore I provide includes O-level math tuition and also JC Math Tuition (H1 Math Tuition & H2 Math Tuition). On the other hand, my statistics tuition in Singapore mostly focus on pre-university level until postgraduate level. For those who prefer online tutoring service, the online O-level math tuition and online JC math tuition are also available.

Mathematics & Statistics Tutor in Singapore

For those who are looking for math tution in Singapore

Need help with this topic? I do provide mathematics home tuition in Singapore for O-level math and also JC H2 math. In addition, online math tutoring is available as well. Feel free to contact me if you would like to know further.

Contact Dr Loo