Respuesta :
From the trigonometric identity, cos(π/2 - x) = sinx is true.
What are trigonometric identities ?
Trigonometric Identities are the equalities that involve trigonometry functions and holds true for all the values of variables given in the equation. There are various distinct trigonometric identities involving the properties of the sine, cosine and tangent of the triangle.
The property cos(π/2 - x) = sinx is a trigonometric identity which is always true for any given triangle.
Thus, from the trigonometric identity, cos(π/2 - x) = sinx is true.
To learn more about trigonometric identity, refer -
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