If Δ=∣∣ ∣ ∣∣cosθ/2111cosθ/2−cosθ/2−cosθ/21−1∣∣ ∣ ∣∣, If the minimun of Δ is m1 and maximum of Δ is m2, then [m1,m2] are related
If sinθ+cosθ=m, then prove that
sin6θ+cos6θ=4−3(m2−1)24, where m2≤2