The values of trigonometric ratios are,
sin A = 28/53
cos A = 45/53
tan A = 28/45
From the given picture,
For the angle A, in the right angled triangle is,
Perpendicular (p) = BC = 28
Base (b) = AC = 45
Hypotenuse (h) = AB = 53
So the values of trigonometric ratios are given by,
sin A = perpendicular/hypotenuse = BC/AB = 28/53
cos A = base/hypotenuse = AC/AB = 45/53
tan A = perpendicular/base = BC/AC = 28/45
Hence the values of sin A, cos A, tan A are given by 28/53, 45/53 and 28/45 respectively.
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