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Could a black hole exist within the event horizon of a bigger black hole? Multiply matrices A and B of any sizes legally (no size compatibility requirment). What kind of matrix multiplication am I? ~ x + y + z = 3, x² + y² + z² = 5, x³ + y³ + z³ = 7 ➪ x⁴ + y⁴ + z⁴ = ? Why erythrocytes have a light section in the middle? 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)?