If the trigonometric function shown has the possible forms of y = d + sin ⁡ x y=d+\sin x y = d + sin x , y = d + cos ⁡ x y=d+\cos x y = d + cos x , y = sin ⁡ ( x − c ) y=\sin\left(x-c\right) y = sin ( x − c ) , or y = cos ⁡ ( x − c ) y=\cos\left(x-c\right) y = cos ( x − c ) , what is the equation that represents the graph? Note that c should have the smallest possible positive value.

y = cos ⁡ ( x − π 4 ) y=\cos\left(x-\frac{\pi}{4}\right) y = cos ( x − 4 π )

y = 1 2 + cos ⁡ x y=\frac12+\cos x y = 2 1 + cos x

y = 1 2 + sin ⁡ x y=\frac12+\sin x y = 2 1 + sin x

y = sin ⁡ ( x − π 4 ) y=\sin\left(x-\frac{\pi}{4}\right) y = sin ( x − 4 π )

If the trigonometric function shown has the possible forms of y=...

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