Cos X=-√3/2 117902-Cos X = 3/2
Download Sin2x Images For Free Answer (Detailed Solution Below) Option 2 2 Free Tests View all Free tests >Through this formula, you can know that 2x•2=4x,Next,we can turn cos4x into 2cos2x^2–1This formula is 2cos2x^2–1–2cos2x=32cos2x^2–2cos2x4=0cos2x^2cos2x2=0 We can know cos2x=2 ;cos2x=1 Cos x = 3/2