Watch Seán walk through this question to show you how to get full marks. For more Leaving Cert HL video solutions, check out https://www.studyclix.ie/subjects/leaving-certificate/higher/mathematics. Studyclix makes exams easier. Check out all our study tools (past exam questions by topic, quizzes, flashcards, videos and notes and more!) on www.studyclix.ie.

Watch Seán walk through this question to show you how to get full marks. For more Leaving Cert HL video solutions, check out https://www.studyclix.ie/subjects/leaving-certificate/higher/mathematics. Studyclix makes exams easier. Check out all our study tools (past exam questions by topic, quizzes, flashcards, videos and notes and more!) on www.studyclix.ie.

TheMathsTutor works out the answer to the question.

Check out KeysToMaths1 for more tutorials and worked solutions: https://www.youtube.com/channel/UCOYoe9L9R13HGUIhszjkeug

Useful tutorial to provide intuition in methods of showing that angles are the same in measure when doing proofs, also ties into theorem 12. More free lessons at: http://www.khanacademy.org/video?v=eF6zYNzlZKQ Note: All Khan Academy content is available for free at (www.khanacademy.org)

A good example of a question where you need to give a combination of mathematical and worded answers.