Paper 2Multiple choiceTechnology-activeCP3

Question 1 · 1 mark

Spec and skills
  • Spec CP3
The fifth roots of unity are the vertices of a regular pentagon in the complex plane. Given that sin⁡(2π5)=0.9511\sin\left(\frac{2 \pi}{5}\right) = 0.9511, the area of the pentagon, correct to two decimal places, is
Choose one option.

Independent preparation for QCE Specialist Mathematics Units 3 and 4. Not affiliated with or endorsed by the Queensland Curriculum and Assessment Authority (QCAA).