Practice — what type is this question? (Trigonometry)

Read each question and decide what type it is before revealing the answer.

Grade 12Paper 2Level 3 — Complex Procedures

5.3 Given: cos 26° = m Without using a calculator, determine 2 sin² 77° in terms of m.

Source: DBE Mathematics Paper 2, November 2019, Question 5.3

Grade 12Paper 2Level 3 — Complex Procedures

Consider: f(x) = sin(x + 25°) cos 15° − cos(x + 25°) sin 15° 5.4.1 Determine the general solution of f(x) = tan 165°

Source: DBE Mathematics Paper 2, November 2019, Question 5.4.1

Grade 12Paper 2Level 3 — Complex Procedures

5.2 Prove: (cos x + sin x)/(cos x − sin x) − (cos x − sin x)/(cos x + sin x) = 2 tan 2x

Source: DBE Mathematics Paper 2, November 2018, Question 5.2