Answer and explanation

Correct answer: A. √3/2

  1. Step 1: Use the special triangles (30-60-90 and 45-45-90).
  2. Step 2: cos 30° = √3/2.
Answer
√3/2.

Practise more Trigonometry, Sequences, Calculus and Data.

Free questions with an explanation for every one, and full timed Ontario Secondary School Diploma (OSSD) mock tests.