Evaluate the composition of inverse trig function with a negative value

The video tutorial explores the concept of evaluating trigonometric functions when given a sine value that does not correspond to a point on the unit circle. The instructor explains the limitations of the unit circle for certain values and demonstrates how to use a triangle with a different radius to solve for cosine using the Pythagorean theorem. The tutorial emphasizes understanding the relationship between sine, cosine, and the hypotenuse in trigonometry.

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