Answer:
The answer is 0.28.
Step-by-step explanation:
We know that,
A trigonometric property is,
\(sin A = cos (90^{\circ} -A)\)
Where A is any angle,
Given,
\(sin x = 0.28\)
By the above property,
\(sin x = cos (90^{\circ}-x)\)
\(\implies cos (90^{\circ}-x) = 0.28\)
Hence, the answer would be 0.28.