Multiple Choice Question (MCQ) 1-2\sin^2 \theta -2\cos^2 \theta= × -2 ✓ -1 × 0 × 1 × 2 Collected in the board: Trigonometry Steven Zheng posted 6 months ago
Answer 1-2\sin^2 \theta -2\cos^2 \theta=1-2(\sin^2 \theta +\cos^2 \theta)=1-2=-1 Steven Zheng posted 6 months ago