Discover Questions

Why is always a problem in recent years, aircraft, whether artificially or incidents? Differentiate(t) = (cos^3 t+ 3cost +7)^9? Could a black hole exist within the event horizon of a bigger black hole? If 5sinθ = 3 determine the value of:
1. cos (θ-360)
2. Tan (squared)θ
3. Sin θ x cos θ (all divided by cos (squared θ)? ~ x + y + z = 3, x² + y² + z² = 5, x³ + y³ + z³ = 7 ➪ x⁴ + y⁴ + z⁴ = ?