Practice: what type is this question? (Trigonometry)

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

Grade 11Paper 2Level 2, Routine Procedures

5.1 Simplify fully: sin(90° − x) · cos(180° + x) + tan x · cos x · sin(x − 180°)

Source: DBE Mathematics Paper 2, Grade 11, November 2017, Question 5.1

Grade 11Paper 2Level 3, Complex Procedures

5.4 Prove the identity: (sin θ − tan θ · cos²θ)/(cos θ − 1 + sin²θ) = tan θ

Source: DBE Mathematics Paper 2, Grade 11, November 2017, Question 5.4

Grade 11Paper 2Level 2, Routine Procedures

Solve for θ, where 0° ≤ θ ≤ 360°: 2sin θ = 1

Practice question: not sourced from a past paper.

Grade 11Paper 2Level 2, Routine Procedures

In the diagram, P̂ = 67°, PQ = 3 cm and PR = 9,2 cm. Determine the length of QR.

Source: DBE Mathematics Paper 2, Grade 11, November 2018/2016, Question 1.1