The value of $ 5 \sin^2 90^{\circ} - 2 cos^20^{\circ} $ is

Trigonometry (10)

The value of $ 5 \sin^2 90^{\circ} - 2 cos^20^{\circ} $ is

  1. -2
  2. 5
  3. 3
  4. -3 

Answer

C. 3

  • Exam Year: 2023