Trigonometry — Question 204
Original QCE Vault practice · 1 mark
Q204 · Practice questionTechnology-freeSimple familiar1 mark
QUESTION 204
The solutions of cos(θ)=−23 for 0≤θ≤2π are (A)32π and 34π (B)6π and 611π (C)65π and 67π (D)3π and 35π WORKED SOLUTION
Answer C
1 markANSWERC. 65π and 67π Worked solution
Cosine is negative in quadrants II and III with reference angle 6π. Selects the correct option.
[1 mark]Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
View the QCAA syllabus