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Sin A=opposite/hypotenuse=BC/CA

=6.76/7.76=0.871

CosC=adjacent/hypotenuse

=BC/CA=6.76/7.76=0.871

TanC=opposite/adjacent=AB/BC

=3.8/6.76=0.562

SinB= CA/CA=1

Cos A=adjacent/hypotenuse=AB/CA=3.8/7.76

=0.489

Tan A=BC/AB=6.76/3.8=1.668

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a).   here, that comes to

        )

x = = 1.   f(1) = 1^2 - 2(1) - 8 = - 9.   vertex is at (1, -9).

        2(1) 

find another point on the curve:   let x=0, for which y=-8.   then (0, -8) is on the curve.   plot the vertex and this point and draw a smooth parabola thru both.

hope this

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.