cot x = −5/√11, x∈(π/2,π) — Evaluate a Multi-Angle Trig Expression
Given cot x = −5/√11 with x in the second quadrant, evaluate (sin(11x/2))(sin6x−cos6x)+(cos(11x/2))(sin6x+cos6x) by collapsing it to sin(x/2)+cos(x/2).
Given cot x = −5/√11 with x in the second quadrant, evaluate (sin(11x/2))(sin6x−cos6x)+(cos(11x/2))(sin6x+cos6x) by collapsing it to sin(x/2)+cos(x/2).