sin^2x + cos^2x =
1
The expression sin^2x + cos^2x represents the Pythagorean identity in trigonometry. This identity shows the relationship between the sine and cosine functions with respect to a right-angled triangle. The identity states that the sum of the squares of the sine and cosine functions is always equal to 1. This can be written as follows:
sin^2x + cos^2x = 1
This identity can be used to solve various trigonometric problems in geometry, physics, and engineering. It is also useful in simplifying complex trigonometric expressions.
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