The Lengths of Two Vectors a and B, and the Angle

question 67

Essay

The lengths of two vectors a and b, and the angle $\theta$ between them, are given. Find the length of their cross product, $| \mathbf { a } \times \mathbf { b } |$ . $| \mathbf { a } | = 4 , |\mathbf { b }| = 5 , \theta = 60 ^ { \circ }$

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Definitions:

Object Permanence Problem

A developmental stage in infants where they learn that objects continue to exist even when they are out of sight.

Cognitive Stages

The phases of cognitive development proposed by theorists like Jean Piaget, marking the progression of thought processes and abilities from infancy through adulthood.

Cognitive Skills

Psychological capabilities that are required for processing information, such as attention, memory, reasoning, and problem-solving.

Concrete Operational Stage

A phase of cognitive development in children, proposed by Piaget, where they are able to think logically about objects and events.