Practice problem
Solve for all solutions on the interval [0,2π)[0,2\pi)[0,2π) 9cos(2θ)=9cos2(θ)−4\\9\cos(2\theta)=9\cos^2(\theta)-49cos(2θ)=9cos2(θ)−4
000
0.730.730.73
2.4122.4122.412
3.0183.0183.018
3.8713.8713.871
5.5535.5535.553
Type a concept, like “slope” or “photosynthesis”.