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how can a trigonometric function be chosen to model periodic phenomena with specified amplitude, frequency, and midline?

Segment xz is bisected by point y. if xy = 12x, and the measure of xz = 18x – 6, solve for x

Aadc is formed by reflecting aabc across line segment ac, as shown in the figure. if the length of ac is 4 units, the area of aadc is square units.

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x, y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis